Abstract

A wireless audio system using low overhead in-band control and audio transmission is provided. The wireless audio system includes a first wireless audio device configured to operate separate physical layer channels for audio data and control data, and transmit the audio data and control data using a single wideband carrier. The wireless audio system also includes one or more second wireless audio devices configured to receive the audio data and control data, and execute an instruction based on the control data.

IPC Classes  ?

• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]

Abstract

A wireless audio system including a transmitter using multiple antenna diversity techniques for different signal types is provided. Multipath performance may be optimized, along with improved spectral efficiency of the system.

IPC Classes  ?

• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04L 1/06 - Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
• H04L 7/00 - Arrangements for synchronising receiver with transmitter
• H04L 27/26 - Systems using multi-frequency codes

Abstract

Acoustic echo cancellation systems and methods are provided that improve the quality of the audio transmitted from by an audio device a near end to a far end when a doubletalk condition is present, including allowing certain subbands of an echo-cancelled signal to be less attenuated by overriding certain gains of subbands of the echo-cancelled audio signal in a non-linear processor, and compressing and applying makeup gain to a remote audio signal.

IPC Classes  ?

• H04M 9/08 - Two-way loud-speaking telephone systems with means for conditioning the signal, e.g.  for suppressing echoes for one or both directions of traffic

Abstract

Techniques for providing transmit redundancy for a wireless audio system, such as an in-ear monitor audio system, are discussed herein. Some embodiments may include tuning to a first wireless communication channel associated with a first carrier frequency to receive a radio frequency signal. Based on a determination that a communication channel condition for the first wireless communication channel satisfies a communication channel condition threshold, various embodiments include tuning to a second wireless communication channel associated with a second carrier frequency to receive the radio frequency signal, where the second carrier frequency is different from the first carrier frequency.

IPC Classes  ?

• H04B 1/10 - Means associated with receiver for limiting or suppressing noise or interference
• H04H 60/32 - Arrangements for monitoring conditions of receiving stations, e.g. malfunction or breakdown of receiving stations
• H04H 60/43 - Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for identifying broadcast time or space for identifying broadcast space, i.e. broadcast channels, broadcast stations or broadcast areas for identifying broadcast channels
• H04R 1/10 - Earpieces; Attachments therefor

Abstract

Audio-visual systems and methods are configured to determine a first talker location based on a first group of sound locations corresponding to audio detected by the microphone in association with one or more talkers; receive a new sound location for new audio detected by the microphone in association with at least one talker; determine a proximity of the new sound location to the first group of sound locations; based on the new sound location being in close proximity to one or more of the sound locations in the first group, determine a second talker location based on the new sound location and the first group of sound locations; determine a second proximity of the second talker location to the first talker location; provide the second talker location to the camera if the second proximity meets or exceeds a threshold; and otherwise, provide the first talker location the camera.

IPC Classes  ?

• H04N 23/695 - Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
• H04N 23/62 - Control of parameters via user interfaces
• H04N 23/68 - Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
• G10L 25/51 - Speech or voice analysis techniques not restricted to a single one of groups specially adapted for particular use for comparison or discrimination

Abstract

An audio device may be connected to a communication network. The audio device may send or receive audio data via a network, based on a network clock that may be synchronized with other audio device connected to the network. The audio device may buffer, convert between digital audio signals and analog audio signals, encrypt, decrypt, packetize, depacketize, compress, and/or decompress audio data using a local asynchronous media clock using a relatively lower precision clocking technology such as a crystal-based oscillator.

IPC Classes  ?

• H04J 3/06 - Synchronising arrangements

Abstract

Transducer steering and configuration systems and methods using a local positioning system are provided. The position and/or orientation of transducers, devices, and/or objects within a physical environment may be utilized to enable steering of lobes and nulls of the transducers, to create self-assembling arrays of the transducers, and to enable monitoring and configuration of the transducers, devices, and objects through an augmented reality interface. The transducers and devices may be more optimally configured which can result in better capture of sound, better reproduction of sound, improved system performance, and increased user satisfaction.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only

Abstract

A wireless microphone system utilizes an antenna structure that supports dual frequency bands. With some embodiments, the wireless microphone system comprises a first apparatus (for example, a wireless transmitter) and an attached second apparatus (for example, an attached microphone), where the chassis of the first apparatus and the housing of the second apparatus support the antenna structure through an electrical connector (for example, through an outer shell of a Cannon (XLR) connector) between the two apparatuses. The chassis and the housing may support first and second halves of a dipole antenna, respectively. The first apparatus supports first and second electrical circuits that are operational within a first and second frequency band, respectively, and that connect to first and second input ports of a combining circuit (for example, a diplexer filter). The output port of the combining circuit connects to the housing through the electrical connector.

IPC Classes  ?

• H01Q 5/48 - Combinations of two or more dipole type antennas
• H04B 1/00 - TRANSMISSION - Details of transmission systems not characterised by the medium used for transmission
• H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles

Abstract

A microphone may digitize multiple analog audio channels into multiple digital audio channels, digitally process the digital audio channels, and output the digital audio channels to another device while maintaining channel separation. The microphone may also include a touch-sensitive user interface that may have multiple live meter modes and a user-selectable color theme.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 5/04 - Circuit arrangements

Abstract

Conferencing systems and methods configured to generate talker coordinates for directing a camera towards talker locations in an environment are disclosed, as well as talker tracking using multiple microphones and multiple cameras. One method includes determining, using a first microphone array and based on audio associated with a talker, a first talker location in a first coordinate system relative to the first microphone array; determining, using a second microphone array and based on the audio associated with the talker, a second talker location in a second coordinate system relative to the second microphone array; determining, based on the first talker location and the second talker location, an estimated talker location in a third coordinate system relative to a camera; and transmitting, to the camera, the estimated talker location in the third coordinate system to cause the camera to point the camera towards the estimated talker location.

IPC Classes  ?

• H04N 7/15 - Conference systems
• H04N 7/14 - Systems for two-way working
• G06T 7/20 - Analysis of motion
• G06T 7/70 - Determining position or orientation of objects or cameras
• H04N 23/611 - Control of cameras or camera modules based on recognised objects where the recognised objects include parts of the human body
• H04N 23/69 - Control of means for changing angle of the field of view, e.g. optical zoom objectives or electronic zooming
• H04N 23/695 - Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects

Abstract

An example immersive audio signal processing system and a computer-implemented method for generating a target arena environment audio stream are provided. The example immersive audio signal processing system includes a plurality of multi-lobe digital sound wave capture devices positioned within the arena environment. The plurality of multi-lobe digital sound wave capture devices is configured to direct first beamformed lobes to a playing region of the arena environment, second beamformed lobes to a spectator region of the arena environment, and third beamformed lobes to a noise source region of the arena environment. A digital signal processor is configured to isolate noise audio components originating from at least the spectator region or the noise source region from the audio signal stream and generate a target arena environment audio stream.

IPC Classes  ?

• H04N 21/233 - Processing of audio elementary streams
• H04N 21/2187 - Live feed
• H04R 3/00 - Circuits for transducers

Abstract

Embodiments include a wireless microphone comprising an elongated main body configured for handheld operation of the microphone; a display bezel area included in the main body; a first antenna positioned at a bottom end of the main body; and a second antenna integrated into the display bezel area. Embodiments also include a wireless handheld microphone comprising a main body having a conductive housing and a tubular shape configured for handheld operation of the microphone; an opening included on a side surface of the conductive housing; a non-conductive cover coupled to the conductive housing and configured to cover the opening; and an antenna positioned adjacent to the non-conductive cover.

IPC Classes  ?

• H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
• H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
• H04R 1/04 - Structural association of microphone with electric circuitry therefor
• H01Q 5/50 - Feeding or matching arrangements for broad-band or multi-band operation
• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 1/50 - Structural association of antennas with earthing switches, lead-in devices or lightning protectors
• H04B 1/3827 - Portable transceivers

Abstract

The present disclosure describes a wireless microphone system that allows one or more microphones to wirelessly communicate with one or more wireless receivers. The wireless microphone system may allow for a plurality of microphones to be used interchangeably with the one or more receivers. The communications between the one or more wireless microphones and the one or more wireless receivers may utilize more than one wireless communication protocol, such as Bluetooth Low Energy (BLE) as well as a proprietary protocol such as a non-Bluetooth 2.4 GHz wireless communication protocol, and the system may switch between the wireless communication protocols. The one or more wireless microphones may further synchronize communications with the one or more receivers.

IPC Classes  ?

• G06F 3/16 - Sound input; Sound output
• H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers

Abstract

Methods and apparatuses for automatic analysis and optimization of an audio signal are described herein. An example method may comprise receiving, by an audio signal optimizer, a first indication to perform an audio signal optimization, receiving an audio signal from an input device, recording a sample of the audio signal, analyzing the sample of the audio signal for at least one audio parameter, and performing, based on an analysis of the sample of the audio signal, the audio signal optimization of the audio signal, wherein the audio signal optimization comprises a configuration of a gain level of the audio signal.

IPC Classes  ?

• H04R 3/04 - Circuits for transducers for correcting frequency response
• G06F 3/16 - Sound input; Sound output
• H04R 1/04 - Structural association of microphone with electric circuitry therefor

Abstract

Various embodiments of the present disclosure provide methods, apparatus, systems, devices, and/or the like for inferring characteristics of a physical enclosure using a plurality of audio signals. The plurality of audio signals may be processed using a feature extraction framework to generate structured audio event data sets, which may be processed using an audio event framework to determine the characteristics of the physical enclosure.

IPC Classes  ?

• H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control
• H04R 5/027 - Spatial or constructional arrangements of microphones, e.g. in dummy heads
• H04R 3/00 - Circuits for transducers
• H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

Abstract

Techniques for isolating audio signals related to audio sources within an audio environment are discussed herein. Examples may include receiving a plurality of audio data objects. Each audio data object includes digitized audio signals captured by a capture device positioned within an audio environment. Examples may also include inputting the audio data objects to a source localizer model that is configured to generate, based on the audio data objects, one or more audio source position estimate objects. Examples may also include inputting the audio data objects and each audio source position estimate object to a source generator model of one or more source generator models. The source generator model is configured to generate, based on the audio source position estimate object, a source isolated audio output component. The source isolated audio output component may include isolated audio signals associated with an audio source within the audio environment.

IPC Classes  ?

• H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control
• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• H04R 5/04 - Circuit arrangements

Abstract

A microphone may comprise a microphone element for detecting sound, and a digital signal processor configured to process a first audio signal that is based on the sound in accordance with a selected one of a plurality of digital signal processing (DSP) modes. Each of the DSP modes may be for processing the first audio signal in a different way. For example, the DSP modes may account for distance of the person speaking (e.g., near versus far) and/or desired tone (e.g., darker, neutral, or bright tone). At least some of the modes may have, for example, an automatic level control setting to provide a more consistent volume as the user changes their distance from the microphone or changes their speaking level, and that may be associated with particular default (and/or adjustable) values of the parameters attack, hold, decay, maximum gain, and/or target gain, each depending upon which DSP is being applied.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only

Abstract

Various embodiments of the present disclosure provide methods, apparatus, systems, devices, and/or the like for reducing defects of audio signal samples by using at least one of audio source feature separation machine learning models, audio generation machine learning models, and/or audio source feature classification machine learning models.

IPC Classes  ?

• G10L 21/028 - Voice signal separating using properties of sound source

Abstract

A wireless power transfer system is provided, comprising a first device having a power supply and configured to wirelessly transmit electric power from the power supply, and a second device having one or more electrical components and configured to wirelessly receive the electric power and provide it to the one or more electrical components for consumption. The second device further comprises an alignment module configured to activate an indicator if a measured level of the received power is greater than a threshold level. Also provided is a wireless system comprising a first device having a power supply and a wireless transmitter configured to transmit a data signal and an electric power signal, and a second device having a wireless receiver configured to receive the electric power signal and data signal, and one or more electrical components configured to consume the received power and process the received data.

IPC Classes  ?

• H02J 50/90 - Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• G08B 5/00 - Visible signalling systems, e.g. personal calling systems, remote indication of seats occupied
• G08B 21/18 - Status alarms

Abstract

Described are systems, methods, apparatuses, and computer program products for wireless in-ear-monitoring (IEM) of audio. A system includes transmitter(s) configured to map orthogonal sub-carriers of a digital signal to narrowband receivers to form receiver-allocated audio channels, modulate the digital signal, and transmit the signal as an ultra-high frequency (UHF) analog carrier wave comprising the orthogonal sub-carriers to the nearby receiver. A narrowband receiver is configured to demodulate and sample the sub-carriers allocated to the receiver. Sub-carriers can be positioned orthogonal to one another in adjacent sub-bands of the frequency domain and beacon symbols and pilot signals can be iteratively provided in the same portion of the frequency domain for each channel. The receiver can use non-data-aided and data-aided approaches for synchronization of the time domain and frequency domain waveforms of the received signal to the transmitted signal prior to sampling the allocated sub-carriers.

IPC Classes  ?

• H04B 5/00 - Near-field transmission systems, e.g. inductive loop type
• H04R 1/10 - Earpieces; Attachments therefor

Abstract

Embodiments include an audio system comprising an audio device, a speaker, and a processor. The audio system is configured to receive data from one or more sensors corresponding to persons in a room and/or characteristics of a room, and responsively take action to modify one or more characteristics of the audio system, share the information with other systems or devices, and track data over time to determine patterns and trends in the data.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04L 12/18 - Arrangements for providing special services to substations for broadcast or conference
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 27/00 - Public address systems

Abstract

Described are in-ear monitoring (IEM) systems configured for audio performance environments requiring low audio latency and high scalability. IEM systems can include an audio channel allocation device that determines audio channel allocation for transmitting audio payload to IEM devices. Audio payload may be allocated to a radio frame based on, e.g., bit rate, modulation and coding scheme, latency/fidelity requirements, etc. IEM devices can include audio driver(s) configured to generate an audio output, a circuit configured to control audio output generation by the driver(s), in-ear portion(s), and a bodypack receiver. IEM devices can receive the audio allocation information, configure its circuit accordingly, receive audio payload carried in a carrier wave based on the allocation information, and generate the audio output based on the audio payload.

IPC Classes  ?

• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04R 1/10 - Earpieces; Attachments therefor

Abstract

A microphone module comprises a housing, an audio bus, and a first plurality of microphones in communication with the audio bus. The microphone module further comprises a module processor in communication with the first plurality of microphones and the audio bus. The module processor is configured to detect the presence of an array processor in communication with the audio bus, detect the presence of a second microphone module in communication with the audio bus, and configure the audio bus to pass audio signals from both the first plurality of microphones and the second microphone module to the array processor.

IPC Classes  ?

• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/00 - Circuits for transducers

Abstract

An audio system that synchronizes multiple audio devices with reduced timing overhead. For example, the audio system may utilize a multi-dimensional buffer to efficiently receive, synchronize, process, and send audio data.

IPC Classes  ?

• H04L 69/16 - Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
• H04L 65/65 - Network streaming protocols, e.g. real-time transport protocol [RTP] or real-time control protocol [RTCP]
• H04R 3/00 - Circuits for transducers

Abstract

The present disclosure describes systems, apparatuses, methods, and computer-readable media for multi-channel software-defined radio (SDR) audio transceivers, multi-user audio systems using the same, and methods of using the same. SDR audio transceivers can comprise an antenna and/or radio transmitter. SDR audio transceivers can be configured for multi-channel audio transmission. The multi-channel audio transmission can include wideband channels or channels allocated across a wideband of spectrum. The multi-channel audio transmission can include narrowband channels or channels allocated to a relatively narrower band of spectrum.

IPC Classes  ?

• H04W 16/14 - Spectrum sharing arrangements
• H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
• G06F 3/16 - Sound input; Sound output
• H04L 41/40 - Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using virtualisation of network functions or resources, e.g. SDN or NFV entities

Abstract

A backplate assembly for a condenser microphone. The backplate may be coated with a parylene configured to help reduce the flatness deviation of the backplate across the diameter of the backplate. A plurality of openings may extend from the top portion of the backplate to the bottom portion of the backplate.

IPC Classes  ?

• H04R 19/01 - Electrostatic transducers characterised by the use of electrets
• H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
• H04R 1/04 - Structural association of microphone with electric circuitry therefor
• H04R 19/04 - Microphones
• H04R 7/04 - Plane diaphragms
• B05D 1/00 - Processes for applying liquids or other fluent materials

Abstract

A microphone may digitize multiple analog audio channels into multiple digital audio channels, digitally process the digital audio channels, and output the digital audio channels to another device while maintaining channel separation. The microphone may also include a touch-sensitive user interface that may have multiple live meter modes and a user-selectable color theme.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 5/04 - Circuit arrangements

Abstract

The present disclosure describes a wireless microphone system that allows one or more microphones to wirelessly communicate with a receiver. Additionally, the wireless microphone system may allow for a plurality of microphones to be used interchangeably with the receiver. To ensure communication between the receiver and the one or more microphones, the receiver may occasionally transmit a synchronization signal to the one or more microphones. In response to receiving the synchronization signal, at least one of the one or more microphones may determine that a clock of the at least one microphone is drifting from the master audio clock of the receiver. The at least one microphone may then adjust the microphone's audio clock to re-synchronize the audio clock of the microphone with the master audio clock of the receiver.

IPC Classes  ?

• G06F 3/16 - Sound input; Sound output
• H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers

Abstract

Array microphone systems and methods that can automatically focus and/or place beamformed lobes in response to detected sound activity are provided. The automatic focus and/or placement of the beamformed lobes can be inhibited based on a remote far end audio signal. The quality of the coverage of audio sources in an environment may be improved by ensuring that beamformed lobes are optimally picking up the audio sources even if they have moved and changed locations.

IPC Classes  ?

• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• H04R 3/00 - Circuits for transducers

Abstract

A wireless earphone incorporates a wire antenna having a form factor driven innovative antenna shape that minimizes antenna detuning caused by user interactions with the earphones. The wire shape, diameter, and distance of the wire antenna from the printed circuit board (PCB) are selected for an acceptable tradeoff between antenna bandwidth and radiated efficiency. By inserting an end through a through-hole of the PCB, the wire antenna is electrically connected to a multi-layer PCB without traditional approaches such as springs, pogo pins, and the like. An antenna holder further secures the antenna within a thin profile housing for precise placement and manufacturing consistency. A PCB-specific RF VIA geometry is also utilized for partial impedance matching of a transmission line to the wire antenna. In addition, a more constant impedance is maintained along the transmission line connecting a radio device with the wire antenna.

IPC Classes  ?

• H05K 1/02 - Printed circuits - Details
• H01Q 1/24 - Supports; Mounting means by structural association with other equipment or articles with receiving set
• H04R 1/10 - Earpieces; Attachments therefor

Abstract

Embodiments include a method of reducing echo in an audio system comprising a microphone, an acoustic echo canceller (AEC), and at least one processor, the method comprising receiving, by the at least one processor, an audio signal detected by the microphone; deploying, by the at least one processor, a microphone lobe towards a first location associated with the detected audio signal; obtaining, by the at least one processor, one or more AEC parameters for the first location, the one or more AEC parameters being stored in a memory in communication with the at least one processor; initializing, by the at least one processor, the AEC using the one or more AEC parameters; and generating, by the at least one processor, an echo-cancelled output signal using the initialized AEC and based on the detected audio signal and a reference signal provided to the AEC.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase

Abstract

Embodiments include an audio system comprising a plurality of microphones disposed in an environment, wherein the plurality of microphones is configured to detect one or more audio sources, and generate location data indicating a location of each of the one or more audio sources relative to the plurality of microphones; and at least one processor communicatively coupled to the plurality of microphones, wherein the at least one processor is configured to receive the location data from the plurality of microphones, and define a plurality of audio pick-up regions in the environment based on the location data, the plurality of audio pick-up regions comprising a first audio pick-up region and a second audio pick-up region, wherein the plurality of microphones are configured to deploy a first lobe within the first audio pick-up region and a second lobe within the second audio pick-up region.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 29/00 - Monitoring arrangements; Testing arrangements
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers

Abstract

A communications device is described that may include a system housing, a microphone array, a loudspeaker, and a loudspeaker housing. The loudspeaker housing is configured to minimize acoustic coupling between the loudspeaker and the microphone array, and at least a portion of the loudspeaker housing is positioned outside of the system housing. The loudspeaker housing may include a plurality of loudspeaker housing mounts. The loudspeaker housing may include first and second halves which may have a gasket between them. The gasket between the first half and the second half of the loudspeaker housing may be configured to dampen vibrations.

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
• H04R 1/02 - Casings; Cabinets; Mountings therein

Abstract

Systems and methods are provided for automatically adjusting a reference gain of an audio mixer having a reference channel for receiving a far end audio signal from a remote location as a reference signal and a plurality of audio input channels for receiving audio signals captured by a plurality of microphone element. An exemplary method includes determining an echo level in an input audio signal received at a given audio input channel, and automatically determining a gain amount for the reference channel based on the echo level. An exemplary system includes a reference gain adjuster configured to automatically determine a gain amount for the reference channel based on an echo level detected in an input audio signal received at a given audio input channel.

IPC Classes  ?

• H03G 3/24 - Control dependent upon ambient noise level or sound level
• H04M 9/08 - Two-way loud-speaking telephone systems with means for conditioning the signal, e.g.  for suppressing echoes for one or both directions of traffic
• H04R 5/04 - Circuit arrangements
• H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control
• H04R 3/00 - Circuits for transducers

Abstract

Audio beamforming systems and methods that enable more precise control of lobes and nulls of an array microphone are provided. Optimized beamformer coefficients can be generated to result in beamformed signals associated with one or more lobes steered towards one or more desired sound locations and one or more nulls steered towards one or more undesired sound location. The performance of acoustic echo cancellation can be improved and enhanced.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• G10L 21/0232 - Processing in the frequency domain

Abstract

Techniques for adaptively providing acoustic echo cancellation (AEC) for a stereo audio signal associated with at least one microphone are discussed herein. Some embodiments may include determining, based at least in part on detecting a reference signal associated with a channel sample portion of the stereo audio signal, a panning state of the stereo audio signal. A hard-panned-configured AEC processing filter or a soft-panned-configured AEC processing filter is applied to the stereo audio signal to generate a filtered audio signal output based on the panning state.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
• H04M 9/08 - Two-way loud-speaking telephone systems with means for conditioning the signal, e.g.  for suppressing echoes for one or both directions of traffic

Abstract

Systems and methods are described for concurrent usage and scanning of wireless channels, particularly with respect to dynamic frequency selection (DFS) and non-DFS channels.

IPC Classes  ?

• H04W 16/14 - Spectrum sharing arrangements
• H04W 76/15 - Setup of multiple wireless link connections
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA

Abstract

Acoustic echo cancellation systems and methods are provided that can cancel and suppress acoustic echo from the output of a mixer that has mixed audio signals from a plurality of acoustic sources, such as microphones. The microphones may have captured speech and sound from a remote location or far end, such as in a conferencing environment. The acoustic echo cancellation may generate an echo-cancelled mixed audio signal based on a mixed audio signal from a mixer, information gathered from the audio signal from each of the plurality of acoustic sources, and a remote audio signal. The systems and methods may be computationally efficient and resource-friendly.

IPC Classes  ?

• H04M 9/08 - Two-way loud-speaking telephone systems with means for conditioning the signal, e.g.  for suppressing echoes for one or both directions of traffic
• G10L 21/0208 - Noise filtering
• H04M 3/56 - Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
• G10L 21/02 - Speech enhancement, e.g. noise reduction or echo cancellation
• G10L 21/0232 - Processing in the frequency domain

Abstract

Embodiments include a wireless microphone comprising an elongated main body configured for handheld operation of the microphone; a display bezel area included in the main body; a first antenna positioned at a bottom end of the main body; and a second antenna integrated into the display bezel area. Embodiments also include a wireless handheld microphone comprising a main body having a conductive housing and a tubular shape configured for handheld operation of the microphone; an opening included on a side surface of the conductive housing; a non-conductive cover coupled to the conductive housing and configured to cover the opening; and an antenna positioned adjacent to the non-conductive cover.

IPC Classes  ?

• H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
• H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
• H04R 1/04 - Structural association of microphone with electric circuitry therefor
• H01Q 5/50 - Feeding or matching arrangements for broad-band or multi-band operation
• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 1/50 - Structural association of antennas with earthing switches, lead-in devices or lightning protectors
• H04B 1/3827 - Portable transceivers

Abstract

A charging apparatus including a device holder disposed within a cavity, wherein the device holder is pivotably attached to a base and is configured to receive a first device type and continuously charge the first device as the device holder rotates from a first position to a second position and throughout rotation from the first position to the second position. The charging apparatus may include a charging element disposed within the cavity that is configured to receive and charge a second device type.

IPC Classes  ?

• H02J 7/00 - Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• H04B 1/3883 - Arrangements for mounting batteries or battery chargers

Abstract

Systems and methods are disclosed for operating a wireless audio network including a plurality of wireless microphone units (e.g., wireless delegate units) and a central access point having a mixer. The wireless microphone units may perform voice detection and level sensing, and make a preliminary gating decision. The central access point may make a final gating decision, determine the granting of wireless communications channels, and generate a final mixed audio output signal.

IPC Classes  ?

• G07C 9/25 - Individual registration on entry or exit involving the use of a pass in combination with an identity check of the pass holder using biometric data, e.g. fingerprints, iris scans or voice recognition
• G10L 17/00 - Speaker identification or verification

Abstract

An electrostatic headphone is provided, comprising a first ear cup assembly, a second ear cup assembly, and a headband assembly coupled to each of the first ear cup assembly and the second ear cup assembly. Each ear cup assembly comprises an electrostatic transducer, a high voltage amplifier electrically coupled to the transducer, and a high voltage power supply electrically coupled to the high voltage amplifier. At least one of the ear cup assemblies further comprises a power source for providing electric power to the high voltage power supply included in the at least one ear cup assembly. In some cases, one or more of the ear cup assemblies further comprises a wireless communication module for receiving audio signals from an audio source.

IPC Classes  ?

• H04R 25/00 - Deaf-aid sets
• H04R 19/02 - Loudspeakers
• H04R 1/10 - Earpieces; Attachments therefor

Abstract

A controller in a wireless system that may switch between two modes. In a first mode, the controller communicates directly with a wireless transceiver, using a first wireless protocol, and receives audio signal directly from the wireless transceiver, using a second wireless protocol. In a second mode, the controller communicates with a wireless transceiver via a wireless access point, using the first wireless protocol, and receives audio signal from the wireless transceiver via a wireless access point, using the second wireless protocol.

IPC Classes  ?

• H04R 1/08 - Mouthpieces; Attachments therefor
• H04L 67/12 - Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks

Abstract

An antenna assembly for a wireless apparatus (such as a wireless microphone apparatus) comprises two inverted-F antennas. The antenna assembly may be formed from a single stamped sheet metal piece to facilitate manufacturing, which may allow the relative orientation of the two antennas to be reliably maintained. Moreover, manufacturing of the wireless apparatus may be simplified since one antenna assembly rather than two separate antennas may be connected to a printed circuit board of the apparatus. The two inverted-F antennas of the antenna assembly may have a common grounding element that joins the two inverted-F antennas and connects the two antennas to a ground plane of a printed circuit board, where the grounding element of the antenna assembly may be shaped to accommodate a corner of the printed circuit board that the antenna assembly is mounted to.

IPC Classes  ?

• H01Q 9/04 - Resonant antennas
• H01Q 25/00 - Antennas or antenna systems providing at least two radiating patterns

Abstract

Systems and methods are disclosed for networked audio automixing using array microphones and an aggregator unit that participate in making a common gating decision to determine which channels to gate on and off. Through the use of such a network of array microphones having the capability to generate submix audio signals and reduced bandwidth metrics, as well as AEC processing capability, array microphone lobe selection can be enhanced while maximizing signal-to-noise ratio, increasing intelligibility, and increasing user satisfaction.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 5/04 - Circuit arrangements

Abstract

An wireless audio transceiver housing comprising an air inlet, an intake manifold, one or more fans, directing vanes, and an exhaust port, wherein the geometry of the intake manifold, the directing vanes, and the exhaust port are configured to enhance airflow from the one or more fans through the housing, over a heatsink, and out the exhaust port towards the rear of the housing by minimizing the pressure drop for the one or more fans and maximizing the potential for airflow through the unit.

IPC Classes  ?

• H04B 1/036 - Cooling arrangements
• H04B 1/08 - Constructional details, e.g. cabinet
• H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating

Abstract

A microphone assembly can include a microphone capsule having a diaphragm and a diaphragm cover, a grill for protecting the microphone capsule, and a filter material placed between the grill and the diaphragm cover. The microphone assembly can include a first air gap between the grill and the filter material to create a first interface, a second air gap between the filter material and the diaphragm cover to create a second interface, and a third air gap between the diaphragm cover and a diaphragm to create a third interface. The first interface, the second interface, and the third interface are each configured to create turbulence to assist in draining off energy from plosives and wind and reduce intensity of disturbances at the diaphragm. The filter material may include a mesh and can be supported by a frame, and the frame may be configured to fit underneath the grill.

IPC Classes  ?

• H04R 1/08 - Mouthpieces; Attachments therefor
• H04R 7/12 - Non-planar diaphragms or cones
• H04R 1/04 - Structural association of microphone with electric circuitry therefor

Abstract

Conferencing systems and methods configured to generate true talker coordinates for use in camera tracking of talkers and objects in an environment and other room intelligence use cases are disclosed. The initial configuration and ongoing usage of conferencing systems can be improved by detecting and converting the locations of objects and talkers in an environment into a common coordinate system. The amount of time and effort by installers, integrators, and users, can be reduced leading to increased satisfaction with installation and usage of the conferencing system.

IPC Classes  ?

• H04R 5/04 - Circuit arrangements
• H04R 5/027 - Spatial or constructional arrangements of microphones, e.g. in dummy heads
• H04N 5/232 - Devices for controlling television cameras, e.g. remote control

Abstract

A wireless communication system with scalable diversity and multi-transceiver diversity deployment is disclosed. An example communication system includes a first wireless transceiver, having a first bandwidth and a first center frequency, a second transceiver, having a second bandwidth and a second center frequency, and a processor. The processor is configured to operate the wireless communication system in a first mode when a difference between the first center frequency and the second center frequency is greater than or equal to half of the first bandwidth plus the second bandwidth. The processor is also configured to operate the wireless communication system in a second mode when a difference between the first center frequency and the second center frequency is less than half of the first bandwidth plus the second bandwidth.

IPC Classes  ?

• H04B 1/401 - Circuits for selecting or indicating operating mode
• H04B 1/00 - TRANSMISSION - Details of transmission systems not characterised by the medium used for transmission

Abstract

Embodiments include a planar microphone array comprising a first linear array arranged along a first axis; and a second linear array arranged along a second axis orthogonal to the first axis, a center of the second linear array aligned with a center of the first linear array, wherein each of the first linear array and the second linear array comprises a corresponding first set of microphone elements nested within a corresponding second set of microphone elements, and each set of microphone elements is arranged symmetrically about the center of the corresponding linear array, such that the first linear array and the second linear array are configured to generate a steerable directional polar pattern, the microphone elements of each linear array configured to capture audio signals. Embodiments also include a microphone system comprising the same and a method performed by processor(s) to generate an output signal for the same.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 19/04 - Microphones

Abstract

Acoustic echo cancellation systems and methods are provided that can generate a continuous mask value that can be used as a gain of a non-linear processor. Communication between a loudspeaker and the non-linear processor can be utilized to adjust the threshold of the non-linear processor when the loudspeaker is active to assist in suppressing far end single talk leakage. The systems and methods can improve the removal of residual echo and therefore enhance the overall performance of the acoustic echo cancellation system.

IPC Classes  ?

• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase
• H04M 9/08 - Two-way loud-speaking telephone systems with means for conditioning the signal, e.g.  for suppressing echoes for one or both directions of traffic

Abstract

A wireless apparatus (such as a wireless microphone) utilizes an antenna comprising at least one element, which also supports a mechanical feature, an electrical circuit feature, or an ornamental feature. When an element is incorporated into an antenna, the element also continues to support its original feature. Embodiments may support different antenna types, including a half wave dipole and an inverted-F antenna that may be configured at different frequency bands suitable for Bluetooth® and WiFi® services. Embodiments support a wireless microphone that utilizes an antenna comprising a grille assembly and a chassis housing, where the grille assembly and the chassis housing are separated by an electric insulator. The RF output of a transmitter is electrically connected to the grille assembly while a grounding point of the transmitter is electrically connected to the chassis housing.

IPC Classes  ?

• H01Q 1/44 - ANTENNAS, i.e. RADIO AERIALS - Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna
• H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
• H01Q 9/16 - Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
• H01Q 9/42 - Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• H04R 1/04 - Structural association of microphone with electric circuitry therefor

Abstract

Systems and methods are disclosed for providing voice and noise activity detection with audio automixers that can reject errant non-voice or non-human noises while maximizing signal-to-noise ratio and minimizing audio latency.

IPC Classes  ?

• G10L 25/78 - Detection of presence or absence of voice signals
• G10L 21/0208 - Noise filtering
• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 5/04 - Circuit arrangements
• H04S 7/00 - Indicating arrangements; Control arrangements, e.g. balance control
• G10L 21/0364 - Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
• G10L 21/02 - Speech enhancement, e.g. noise reduction or echo cancellation
• G10L 21/0316 - Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude

Abstract

A soft decision audio decoding system for preserving audio continuity in a digital wireless audio receiver is provided that deduces the likelihood of errors in a received digital signal, based on generated hard bits and soft bits. The soft bits may be utilized by a soft audio decoder to determine whether the digital signal should be decoded or muted. The soft bits may be generated based on the detected point and a detected noise power, or by using a soft-output Viterbi algorithm. The value of the soft bits may indicate confidence in the strength of the hard bit generation. The soft decision audio decoding system may infer errors and decode perceptually acceptable audio without requiring error detection, as in conventional systems, as well as have low latency and improved granularity.

IPC Classes  ?

• G06F 3/16 - Sound input; Sound output
• G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
• G10L 19/005 - Correction of errors induced by the transmission channel, if related to the coding algorithm

Abstract

Described are systems, methods, apparatuses, and computer program products for wireless in-ear-monitoring (IEM) of audio. A system includes transmitter(s) configured to map orthogonal sub-carriers of a digital signal to narrowband receivers to form receiver-allocated audio channels, modulate the digital signal, and transmit the signal as an ultra-high frequency (UHF) analog carrier wave comprising the orthogonal sub-carriers to the nearby receiver. A narrowband receiver is configured to demodulate and sample the sub-carriers allocated to the receiver. Sub-carriers can be positioned orthogonal to one another in adjacent sub-bands of the frequency domain and beacon symbols and pilot signals can be iteratively provided in the same portion of the frequency domain for each channel. The receiver can use non-data-aided and data-aided approaches for synchronization of the time domain and frequency domain waveforms of the received signal to the transmitted signal prior to sampling the allocated sub-carriers.

IPC Classes  ?

• H04B 5/00 - Near-field transmission systems, e.g. inductive loop type
• H04R 1/10 - Earpieces; Attachments therefor

Abstract

Endfire linear array microphone systems and methods with consistent directionality and performance at different frequency ranges are provided. The endfire linear array microphone includes a delay and sum beamformer and a differential beamformer. The delay and sum beamformer may produce pickup patterns with good directionality at higher frequency ranges, but cause the pickup patterns to become more omnidirectional at lower frequencies. The differential beamformer may produce pickup patterns with good directionality at lower frequencies. By combining the delay and sum beamformer and differential beamformer within the linear array microphone, the overall directionality of the linear array microphone may be maintained at different frequency ranges while using the same microphone elements.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/04 - Circuits for transducers for correcting frequency response

Abstract

A microphone transducer is provided, the microphone transducer comprising a housing and a transducer assembly supported within the housing and defining an internal acoustic space. The transducer assembly includes a magnet assembly, a diaphragm disposed adjacent the magnet assembly and having a front surface and a rear surface, and a coil attached to the rear surface of the diaphragm and capable of moving relative to the magnet assembly in response to acoustic waves impinging on the front surface. The transducer assembly further includes a primary port establishing acoustic communication between the internal acoustic space and an external cavity at least partially within the housing, and a secondary port located at the front surface of the diaphragm.

IPC Classes  ?

• H04R 1/02 - Casings; Cabinets; Mountings therein
• H04R 9/08 - Microphones
• H04R 1/38 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
• B65D 81/18 - Containers, packaging elements, or packages, for contents presenting particular transport or storage problems, or adapted to be used for non-packaging purposes after removal of contents providing specific environment for contents, e.g. temperature above or below ambient
• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Abstract

A wireless audio system including a transmitter using multiple antenna diversity techniques for different signal types is provided. Multipath performance may be optimized, along with improved spectral efficiency of the system.

IPC Classes  ?

• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04L 1/06 - Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
• H04L 27/26 - Systems using multi-frequency codes
• H04L 7/00 - Arrangements for synchronising receiver with transmitter
• H04R 3/00 - Circuits for transducers

Abstract

Array microphone systems and methods having adjustable lobe shapes are provided. The lobe shapes of pickup patterns in an array microphone may be adjusted by weighting the audio signals of subsets of the microphone elements that make up the array. The lobe shapes may be adjusted in a direction independent of a steering vector of the lobe. Users may have greater control of lobes which can result in more efficient and optimal coverage of audio sources in environments.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 19/04 - Microphones

Abstract

Embodiments include a processing device communicatively coupled to a plurality of audio devices comprising at least one microphone and at least one speaker, and to a digital signal processing (DSP) component having a plurality of audio input channels for receiving audio signals captured by the at least one microphone, the processing device being configured to identify one or more of the audio devices based on a unique identifier associated with each of said one or more audio devices; obtain device information from each identified audio device; and adjust one or more settings of the DSP component based on the device information. A computer-implemented method of automatically configuring an audio conferencing system, comprising a digital signal processing (DSP) component and a plurality of audio devices including at least one speaker and at least one microphone, is also provided.

IPC Classes  ?

• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers
• H04R 3/00 - Circuits for transducers
• H04R 5/027 - Spatial or constructional arrangements of microphones, e.g. in dummy heads
• H04R 5/02 - Spatial or constructional arrangements of loudspeakers
• H04R 29/00 - Monitoring arrangements; Testing arrangements
• H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic

Abstract

A wireless microphone system comprises system equipment (for example, rack-mounted equipment including receivers/transceivers, distribution amplifier), one or more transmission line accessories, and a transmission line network connecting the accessories with the system equipment. The transmission line accessory compensates for downlink RF losses on transmission lines between accessories and between an accessory and system equipment. Compensation parameters for the transmission line accessory is determined by the system equipment by generating an uplink RF test signal by an RF source at the system equipment. The RF source may be varied over a plurality of frequencies to determine the compensation parameters over the plurality of frequencies. The system equipment subsequently instructs the transmission line accessory to configure an adjustable RF gain circuit (and also possibly a compensation filter) accordingly. The wireless microphone system may also discover accessories on the transmission line network to facilitate installation and maintenance.

IPC Classes  ?

• H04B 3/06 - Control of transmission; Equalising by the transmitted signal
• H04B 3/46 - Monitoring; Testing
• H04B 1/18 - Input circuits, e.g. for coupling to an antenna or a transmission line
• H04B 17/00 - Monitoring; Testing
• H04R 29/00 - Monitoring arrangements; Testing arrangements

Abstract

Embodiments include a microphone assembly comprising an array microphone and a housing configured to support the array microphone and sized and shaped to be mountable in a drop ceiling in place of at least one of a plurality of ceiling tiles included in the drop ceiling. A front face of the housing includes a sound-permeable screen having a size and shape that is substantially similar to the at least one of the plurality of ceiling tiles. Embodiments also include an array microphone system comprising a plurality of microphones arranged, on a substrate, in a number of concentric, nested rings of varying sizes around a central point of the substrate. Each ring comprises a subset of the plurality of microphones positioned at predetermined intervals along a circumference of the ring.

IPC Classes  ?

• H04R 1/02 - Casings; Cabinets; Mountings therein
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Abstract

Techniques for providing an artificial intelligence denoiser related to audio processing are discussed herein. Some embodiments may include providing an audio signal sample associated with at least one microphone to a time-frequency domain transformation pipeline for a transformation period. Some embodiments may include providing the audio signal sample to a deep neural network (DNN) processing loop that is configured to determine a denoiser mask associated with a noise prediction for the audio signal sample. In a circumstance where the denoiser mask is determined prior to expiration of the transformation period, some embodiments may include applying the denoiser mask associated with the noise prediction to a frequency domain version of the audio signal sample associated with the time-frequency domain transformation pipeline to generate a denoised audio signal sample associated with the at least one microphone.

IPC Classes  ?

• H04R 3/04 - Circuits for transducers for correcting frequency response

Abstract

Embodiments include an audio system comprising a speaker array comprising a plurality of drivers arranged in a first planar configuration; a microphone array comprising a plurality of transducers arranged in a second planar configuration; and a beamformer communicatively coupled to the speaker array and the microphone array, the beamformer configured to: generate an individual speaker output signal for each of the drivers in the speaker array based on one or more input audio signals received from an audio source, and generate a microphone output signal for the microphone array based on one or more microphone signals captured by one or more of the transducers. Embodiments also include a method performed by one or more processors coupled to a microphone array having a plurality of transducers and a speaker array having a plurality of drivers.

IPC Classes  ?

• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase

Abstract

Systems, apparatuses, and methods are described for increasing detune-resiliency of a user device during user-interactions. An antenna bandwidth may be increased, via modification of one or more antenna characteristics and/or the addition of one or more novel antenna components, in order to increase the detune-resiliency of the antenna. Moreover, user interface elements of the user device may be located outside of a protected region of the antenna. Thus, the user device may be more resilient to detuning during user interactions.

IPC Classes  ?

• H01Q 1/27 - Adaptation for use in or on movable bodies
• H01Q 9/42 - Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
• H01Q 1/48 - Earthing means; Earth screens; Counterpoises
• H04R 1/10 - Earpieces; Attachments therefor
• G06F 3/16 - Sound input; Sound output

Abstract

Embodiments include an array microphone comprising a plurality of microphone sets arranged in a linear pattern relative to a first axis and configured to cover a plurality of frequency bands. Each microphone set comprises a first microphone arranged along the first axis and a second microphone arranged along a second axis orthogonal to the first microphone, wherein a distance between adjacent microphones along the first axis is selected from a first group consisting of whole number multiples of a first value, and within each element, a distance between the first and second microphones along the second axis is selected from a second group consisting of whole number multiples of a second value.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/24 - Structural combinations of separate transducers or of parts of the same transducer and responsive respectively to two or more frequency ranges
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 19/04 - Microphones

Abstract

A wireless audio system using low overhead in-band control and audio transmission is provided. The wireless audio system includes a first wireless audio device configured to operate separate physical layer channels for audio data and control data, and transmit the audio data and control data using a single wideband carrier. The wireless audio system also includes one or more second wireless audio devices configured to receive the audio data and control data, and execute an instruction based on the control data.

IPC Classes  ?

• H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04L 5/00 - Arrangements affording multiple use of the transmission path
• H04W 36/00 - Handoff or reselecting arrangements
• H04W 72/04 - Wireless resource allocation
• H04W 74/08 - Non-scheduled access, e.g. random access, ALOHA or CSMA [Carrier Sense Multiple Access]
• H04W 72/0446 - Resources in time domain, e.g. slots or frames
• H04W 72/0453 - Resources in frequency domain, e.g. a carrier in FDMA

Abstract

A software-based conferencing platform is provided. The platform comprises a plurality of audio sources providing input audio signals, the audio sources including a virtual audio device driver configured to receive far-end input audio signals from a conferencing software module, and a network audio library configured to receive near-end input audio signals from one or more near-end audio devices. The platform further comprises a digital signal processing component configured to receive the input audio signals from the audio sources and generate audio output signals based the received signals, the digital signal processing component comprising an acoustic echo cancellation module configured to apply acoustic echo cancellation techniques to one or more of the near-end input audio signals.

IPC Classes  ?

• G10L 21/0232 - Processing in the frequency domain
• G06F 3/16 - Sound input; Sound output
• G06F 21/60 - Protecting data
• H04L 7/00 - Arrangements for synchronising receiver with transmitter
• H04L 43/08 - Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 3/00 - Circuits for transducers
• H04R 3/12 - Circuits for transducers for distributing signals to two or more loudspeakers

Abstract

Conferencing system and methods for facilitating conferencing sessions in an environment using virtual assistant systems and artificial intelligence algorithms are disclosed. Virtual assistant systems may be integrated into devices of the conferencing system in order to enable higher quality experiences with the virtual assistant by providing improved audio and visual feedback. The conferencing system can provide improved control, configuration, and interaction with the devices of the conferencing system through use of artificial intelligence algorithm that processes voice commands and characteristics of the environment and conferencing sessions, which can result in better system performance and increased user satisfaction.

IPC Classes  ?

• H04L 12/18 - Arrangements for providing special services to substations for broadcast or conference
• G10L 15/22 - Procedures used during a speech recognition process, e.g. man-machine dialog

Abstract

Systems and methods configured to employ a beamforming microphone array to determine a noise field map of a conferencing environment and modify operation of the beamforming microphone array responsive to the determined noise field map.

IPC Classes  ?

• G06F 3/16 - Sound input; Sound output
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• G10K 11/178 - Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using interference effects; Masking sound by electro-acoustically regenerating the original acoustic waves in anti-phase

Abstract

A microphone device comprising, for example, a mid microphone cartridge and two side microphone cartridges. The mid microphone cartridge may be, for example, a cardioid microphone cartridge, and the side microphone cartridges may each be, for example, a bidirectional microphone cartridge. Each of the mid microphone cartridge and of the two side microphone cartridges may be orthogonal to the other two microphone cartridges. The microphone device, which may be referred to herein as a mid dual-side microphone, may provide a combined pickup pattern, such as a beam and/or a toroid, that may be steerable.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 1/08 - Mouthpieces; Attachments therefor
• H04S 1/00 - Two-channel systems
• H04R 5/027 - Spatial or constructional arrangements of microphones, e.g. in dummy heads

Abstract

A microphone assembly comprising a housing, a single flexible diaphragm, and a rigid backplate. The backplate may be coated with a parylene configured to help reduce the flatness deviation of the backplate across the diameter of the backplate. A plurality of openings may extend from the top portion of the backplate to the bottom portion of the backplate.

IPC Classes  ?

• H04R 19/01 - Electrostatic transducers characterised by the use of electrets
• H04R 1/04 - Structural association of microphone with electric circuitry therefor
• H04R 7/04 - Plane diaphragms
• H04R 19/04 - Microphones
• H04R 31/00 - Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
• B05D 1/00 - Processes for applying liquids or other fluent materials

Abstract

A ribbon microphone assembly may include a ribbon capsule assembly, an amplifier connected to the capsule assembly, an analog-to-digital converter connected to the amplifier, a digital signal processor connected to the analog-to-digital converter to compensate for an on-axis frequency response caused by a directional polar response of the ribbon microphone assembly, and a USB output port.

IPC Classes  ?

• H04R 3/04 - Circuits for transducers for correcting frequency response
• H04R 9/08 - Microphones
• H04R 9/02 - Transducers of moving-coil, moving-strip, or moving-wire type - Details
• G06F 3/16 - Sound input; Sound output
• H04R 1/32 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
• H04R 9/04 - Construction, mounting, or centering of coil
• H04R 7/04 - Plane diaphragms
• H03F 3/183 - Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
• H04R 1/04 - Structural association of microphone with electric circuitry therefor

Abstract

A microphone having a multi-channel mixer and one or more connectors usable to receive and/or output audio. Any of the connectors may be used as an input connector, as an output connector, or configured to be switchable between being an input and an output connector. The user of the microphone may be able to conveniently use one or more of the connectors to expand the microphone to become part of a larger setup that uses multiple microphones. For example, an XLR connector of the microphone may be passive, and may be configured such that a user can daisy chain the output from an XLR connector of another microphone into an XLR connector of the microphone. In such an arrangement, an output based on one or both of the microphones may be output through another connector of the microphone, such as a USB connector.

IPC Classes  ?

• H04S 3/00 - Systems employing more than two channels, e.g. quadraphonic
• G10L 19/008 - Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
• H04R 1/04 - Structural association of microphone with electric circuitry therefor
• G06F 3/16 - Sound input; Sound output
• H04R 3/00 - Circuits for transducers

Abstract

Hybrid audio beamforming systems and methods with narrower beams and improved directivity are provided. The hybrid audio beamforming system includes a time domain beamformer for processing upper frequency band signals of an audio signal using a time domain beamforming technique, and a frequency domain beamformer for processing groups of lower frequency band signals of the audio signal using frequency domain beamforming techniques.

IPC Classes  ?

• H04R 3/00 - Circuits for transducers

Abstract

An audio device includes a circular cover comprising a top and a bottom, a circular screen rotationally engaged with the bottom of the cover, and a circular shroud removably engaged with top of the cover. The top of the cover includes a plurality of mounting holes. The mounting holes may include a plurality of holes in a VESA pole mounting pattern. The mounting holes may also include a plurality of cable mounting holes configured in a square pattern having greater spacing than the VESA mounting pattern. The audio device may include a plurality of microphones and/or one or more loudspeakers.

IPC Classes  ?

• H04R 1/08 - Mouthpieces; Attachments therefor
• H04R 1/02 - Casings; Cabinets; Mountings therein
• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers

Abstract

A wireless audio system configured to perform an acoustic ranging operation is disclosed. The audio system comprises an audio transmitter, and audio receiver, and is configured to determine a distance between the audio transmitter and the audio receiver.

IPC Classes  ?

• G01S 7/536 - Extracting wanted echo signals
• G01S 15/34 - Systems for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated using transmission of continuous, frequency-modulated waves while heterodyning the received signal, or a signal derived therefrom, with a locally-generated signal related to the contemporaneously transmitted signal

Abstract

An audio device may be configured to have multiple modes of operation. The mode of the device may be associated with a particular geometric configuration of the device, such as by swiveling an arm of the device and/or changing the orientation of the device with respect to gravity and/or a surface (e.g., table) on which the device rests. The device may determine the appropriate state based on the current geometry, and based on the state may tune the device for a particular operation suited for that geometry. For example, different signal processing parameters may be applied, different microphones may be enabled and disabled, and/or different acoustic conditions may be provided (for example, different modes of a passive radiator) based on the mode.

IPC Classes  ?

• H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
• H04R 1/34 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means

Abstract

A filter that may increase and extend, the bass frequency response of a speaker of an audio device. The filter may be space-efficient. The filter may be part of a device that does not necessarily have a large rear cavity and that does not necessarily have porting and/or passive radiating. The low-frequency extension filter may be used, for example, with a smaller rear cavity while essentially simulating the acoustic effects of a much larger rear cavity. The low-frequency extension filter may include a plurality of acoustic pathways, such as tubes, which may wind around along a tortuous path and which may resemble a labyrinthine design. The tubes may be selected to resonate with particular predetermined low frequency channels. For example, the tubes may be approximately a quarter wavelength of the center of the corresponding frequency channel, or even slightly shorter.

IPC Classes  ?

• H04R 1/28 - Transducer mountings or enclosures designed for specific frequency response; Transducer enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means

Abstract

A wearable device, such as an earphone, may include a conformal antenna that is resilient to performance degradation due to user-interactions and manufacturing process variances. The antenna may comprise one or more surfaces suitable for receiving and transmitting electromagnetic signals, wherein the one or more surfaces of the antenna may be non-parallel with a ground plane and a user-interactable surface, thereby minimizing image current cancellation and coupling between the antenna and a user finger during user interactions with the user-interactable surface.

IPC Classes  ?

• H04R 1/02 - Casings; Cabinets; Mountings therein
• H01Q 1/27 - Adaptation for use in or on movable bodies
• H04R 1/10 - Earpieces; Attachments therefor
• H01Q 9/04 - Resonant antennas

Abstract

A dual band antenna that allows the independent optimization of each frequency band by adjusting the sizes of the antenna elements. For example, an antenna may have two different drivers, one for the high-frequency and one for the low frequency. By using elements orthogonally connected to the low frequency driver, the low frequency driver can function as both a reflector to the high frequency drivers and the low frequency driver without affecting the antenna's performance in the high frequency. The antenna may also have parasitic elements. For example, parasitic directors parallel to the high frequency band driver can be configured to improve performance in the high frequency band. Pairs of additional parasitic directors can be orthogonally connected these directors. These pairs can be adjusted in size to improve performance in the low frequency band with minimal impact on performance in the high frequency band.

IPC Classes  ?

• H01Q 21/30 - Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems

Abstract

A virtual USB interface can enable a software module, e.g., conferencing software, to interface with a software audio endpoint as if the software audio endpoint were a physical USB endpoint. Signals conforming to the USB standard can be transceived and adapted to and from non-USB signals using the virtual USB interface. Both the signals conforming to the USB standard and the non-USB signals may include a media channel and/or a control channel.

IPC Classes  ?

• G06F 3/16 - Sound input; Sound output
• G10L 21/0232 - Processing in the frequency domain
• H04L 29/08 - Transmission control procedure, e.g. data link level control procedure
• G06F 13/42 - Bus transfer protocol, e.g. handshake; Synchronisation

Abstract

Embodiments allow for an auto-mixer to gate microphones on and off based on speech detection, without losing or discarding the speech received during the speech recognition period. An example method includes receiving and storing an input audio signal. The method also includes determining, based on a first segment of the input audio signal, that the input audio signal comprises speech, and determining a delay between the input audio signal and a corresponding output audio signal provided to a speaker. The method also includes reducing the delay, wherein reducing the delay comprises removing one or more segments of the stored input audio signal to create a time-compressed audio signal and providing the time-compressed audio signal as the corresponding output audio signal. The method also includes determining that the delay is less than a threshold duration, and responsively providing the input audio signal as the corresponding output audio signal.

IPC Classes  ?

• G10L 21/0308 - Voice signal separating characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques
• G10L 21/0224 - Processing in the time domain
• G10L 21/0232 - Processing in the frequency domain
• G10L 25/84 - Detection of presence or absence of voice signals for discriminating voice from noise
• G10L 21/0216 - Noise filtering characterised by the method used for estimating noise

Abstract

A wireless microphone system is disclosed. The system includes a plurality of wireless microphones each classified in accordance with one or more audio quality parameters. The system also includes a control device communicatively coupled to the plurality of wireless microphones. The control device is configured to determine that a first wireless microphone corresponds to a first audio classification, and that a second wireless microphone corresponds to a second, different, audio classification. The control device is also configured to determine a first modulation and coding scheme for the first wireless microphone based on the first audio classification, and a second modulation and coding scheme for the second wireless microphone based on the second audio classification. The control device is further configured to transmit, to the first and second wireless microphones respectively, the determined first and second modulation and coding schemes.

IPC Classes  ?

• H04L 1/00 - Arrangements for detecting or preventing errors in the information received
• H04W 24/02 - Arrangements for optimising operational condition
• H04W 48/16 - Discovering; Processing access restriction or access information
• H04W 28/20 - Negotiating bandwidth
• H04W 28/22 - Negotiating communication rate
• H04R 3/00 - Circuits for transducers

Abstract

A method for synchronizing baseband clocks in an OFDMA wireless microphone system is disclosed. An example method includes receiving a plurality of pilot subcarriers from an audio transmitter. The method also includes determining a timing offset estimate based on the pilot subcarriers. The method further includes determining a tuning value by passing the timing offset estimate through a proportional-integral controller. The method still further includes determining a modified reference signal by modifying a reference oscillator based on the tuning value. And the method yet further includes controlling (i) an audio sample clock and (ii) an antenna data clock based on the modified reference signal.

IPC Classes  ?

• H04L 7/00 - Arrangements for synchronising receiver with transmitter
• H04L 27/26 - Systems using multi-frequency codes
• H04J 11/00 - Orthogonal multiplex systems
• H04L 5/00 - Arrangements affording multiple use of the transmission path

Abstract

A wireless audio system for encoding and decoding an audio signal using spectral bandwidth replication is provided. Bandwidth extension is performed in the time-domain, enabling low-latency audio coding.

IPC Classes  ?

• G10L 21/00 - Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
• G10L 19/00 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
• G10L 19/02 - Speech or audio signal analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
• G10L 19/12 - Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
• G10L 19/16 - Vocoder architecture

Abstract

A wireless audio system including a transmitter using multiple antenna diversity techniques for different signal types is provided. Multipath performance may be optimized, along with improved spectral efficiency of the system.

IPC Classes  ?

• H04B 7/06 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
• H04L 1/06 - Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
• H04L 27/26 - Systems using multi-frequency codes

Abstract

A middleware component of an audio system configured to operate with a plurality of audio devices operating in different environments to centralize management of certain aspects of such audio devices.

IPC Classes  ?

• G06F 3/16 - Sound input; Sound output
• H04R 5/04 - Circuit arrangements