Abstract

Embodiments include an antenna assembly for a wireless microphone, comprising a helical antenna including a feed point and at least one contact pin coupling the feed point to the wireless microphone. The helical antenna is configured for operation in first and second frequency bands. Embodiments also include a wireless microphone comprising a main body having top and bottom ends and an antenna assembly coupled to the bottom end. The antenna assembly comprises a helical antenna configured to transmit and receive wireless signals, an inner core configured to support the helical antenna on an outer surface of the inner core, and an outer shell formed over the inner core and the helical antenna. Embodiments further include a method of manufacturing an antenna assembly for a wireless microphone using a first manufacturing process to form a core unit of the antenna assembly and a second manufacturing process to form an overmold.

IPC Classes  ?

• H01Q 1/36 - Structural form of radiating elements, e.g. cone, spiral, umbrella
• H01Q 5/357 - Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using a single feed point
• H01Q 11/08 - Helical antennas
• H04R 1/04 - Structural association of microphone with electric circuitry therefor

Abstract

A flexible multi-channel diversity wireless audio receiver system for routing, processing, and combining multiple radio frequency (RF) signals containing audio signals received on respective antennas is provided. The wireless audio receiver system provides flexible routing of multiple RF signals in different selectable modes, and low latency uninterrupted reception of signals in harsh RF environments by combining multiple RF signals to maximize signal-to-noise ratio. The audio output may be generated in an uninterrupted fashion and mitigate multipath fading, interference, and asymmetrical noise issues. Received RF signals may also be cascaded by the wireless audio receiver system to allow daisy chaining.

IPC Classes  ?

• 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

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

Abstract

A RF distribution system determines its configuration and verifies the consistency of the determined configuration. Based on a device identifier, the RF distribution system may individually instruct each RF component to provide a generated signal. Consequently, a first RF component may modulate a signal on a first port. If a second RF component detects a modulated signal on a second port, then the RF distribution system deems that the two RF components are connected together. The procedure may be repeated for the remaining RF components so that the RF configuration of the RF distribution system may be determined. The determined RF configuration may be further verified for operational consistency. The RF distribution system may also scan a RF spectrum, determine a set of frequencies that provides RF compatibility with the RF distribution system based on the scanning, and configure the RF components in accordance with the set of frequencies.

IPC Classes  ?

• H04B 1/20 - Circuits for coupling gramophone pick-up, recorder output, or microphone to receiver
• H04R 3/00 - Circuits for transducers
• H04R 27/00 - Public address systems