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.
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
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.
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
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.
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
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.
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
5.
TRANSMIT REDUNDANCY AND AUTONOMOUS RECEIVER CHANNEL SELECTION IN A WIRELESS IN-EAR MONITOR AUDIO SYSTEM
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.
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.
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
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.
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
9.
SYSTEM AND METHOD FOR CAMERA MOTION STABILIZATION USING AUDIO LOCALIZATION
Audio-visual systems and methods are configured to determine a first talker location (Pa) based on a first group of sound locations corresponding to audio detected by the microphone (104) in association with one or more talkers (102); 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 (Pb) 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 (106) if the second proximity meets or exceeds a threshold; and otherwise, provide the first talker location the camera.
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.
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.
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.
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.
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.
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.
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 (104) and based on audio associated with a talker (102), a first talker location (P1) in a first coordinate system relative to the first microphone array; determining, using a second microphone array (104) and based on the audio associated with the talker (102), a second talker location (P2) 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 (P3) in a third coordinate system relative to a camera (106); 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.
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
H04N 21/8547 - Content authoring involving timestamps for synchronizing content
18.
MULTI-LOBE DIGITAL MICROPHONE ENABLED AUDIO CAPTURE AND SPATIALIZATION FOR GENERATING AN IMMERSIVE ARENA BASED AUDIO EXPERIENCE
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.
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.
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
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.
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.
H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
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.
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.
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.
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.
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.
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.
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.
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
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.
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.
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.
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
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.
G10H 1/00 - ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE - Details of electrophonic musical instruments
36.
IN-EAR MONITORING (IEM) SYSTEM CONFIGURED FOR AUDIO PERFORMANCE ENVIRONMENTS REQUIRING LOW AUDIO LATENCY AND HIGH SCALABILITY
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.
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.
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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.
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
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.
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.
H04B 1/00 - TRANSMISSION - Details of transmission systems not characterised by the medium used for transmission
H04B 1/20 - Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
H04B 7/08 - Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
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.
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.
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.
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.
H04R 1/00 - LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS - Details of transducers
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.
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.
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
48.
SYSTEM AND METHOD FOR OPTIMIZATION OF ACOUSTIC ECHO CANCELLATION CONVERGENCE
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.
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
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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.
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
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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.
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
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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.
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.
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.
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.
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
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.
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.
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
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.
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
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.
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.
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
64.
DISTRIBUTED ALGORITHM FOR AUTOMIXING SPEECH OVER WIRELESS NETWORKS
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.
H04B 1/20 - Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
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 3/02 - Circuits for transducers for preventing acoustic reaction
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
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.
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.
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
69.
Quadrature Antenna for Portable Wireless Applications
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.
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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 3/02 - Circuits for transducers for preventing acoustic reaction
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.
MICROPHONE ASSEMBLY, FILTER FOR MICROPHONE, PROCESS FOR ASSEMBLY AND MANUFACTURING MICROPHONE AND FILTER FOR MICROPHONE, AND METHOD FOR FILTERING MICROPHONE
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.
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.
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.
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
75.
Microphone Assembly, Filter for Microphone, Process for Assembly and Manufacturing Microphone and Filter for Microphone, and Method for Filtering Microphone
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.
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.
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.
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.
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.
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
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.
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
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.
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 1/22 - Supports; Mounting means by structural association with other equipment or articles
H01Q 1/27 - Adaptation for use in or on movable bodies
H01Q 21/28 - Combinations of substantially independent non-interacting antenna units or systems
H01Q 5/307 - Individual or coupled radiating elements, each element being fed in an unspecified way
H01Q 21/24 - Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
82.
Microphone Antenna for Wireless Microphone Applications
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.
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
83.
MICROPHONE ANTENNA FOR WIRELESS MICROPHONE APPLICATIONS
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.
H01Q 1/22 - Supports; Mounting means by structural association with other equipment or articles
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
H04R 1/04 - Structural association of microphone with electric circuitry therefor
84.
Low latency automixer integrated with voice and noise activity detection
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.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Audio equipment for conferencing, consisting of microphones, audio speakers, touchscreen user interface for controlling electronic devices, and Ethernet or USB connection; audio electronic components, namely, microphones, audio speakers, and speakerphones
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Audio equipment for conferencing, consisting of microphones, audio speakers, touchscreen user interface for controlling electronic devices, and Ethernet or USB connection; audio electronic components, namely, microphones, audio speakers, and speakerphones
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.
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
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.
G10H 1/00 - ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE - Details of electrophonic musical instruments
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.
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.
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
92.
MOVING COIL MICROPHONE TRANSDUCER WITH SECONDARY PORT
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.
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
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.
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
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.
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.
H04R 1/40 - Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
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.
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.
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.
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
99.
DEEP NEURAL NETWORK DENOISER MASK GENERATION SYSTEM FOR AUDIO PROCESSING
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.
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.
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
