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.

A method for optimizing speech pickup in a speakerphone system, wherein the speakerphone system comprises a microphone system placed in a specific configuration, wherein the method comprising receiving acoustic input signals by the microphone system, processing said acoustic input signals by using an algorithm for focusing and steering a selected target sound signal towards a desired direction, and transmitting an output signal based on said processing.

An electronic device includes a microphone array to capture audio input data, a speaker array to render audio output data for playback; one or more sensors to detect an orientation of the microphone array, acoustic echo cancellation logic, and an interface. The acoustic echo cancellation logic applies acoustic echo cancellation to the audio input data to form echo-cancelled audio input data based on the orientation of the microphone array. The interface transmits the echo-cancelled audio input data over a communications channel as part of an audiovisual communication system.

An electronic device includes a microphone array configured to capture audio data, one or more sensors configured to detect an orientation of the microphone array, and digital signal processing (DSP) logic, and an interface. The DSP logic processes, based on the orientation of the microphone array detected by the one or more sensors, the audio data captured by the microphone array to form audio input data. The interface configured to transmit the audio input data over a communications channel to be output by another electronic device.

A microphone array system or microphone array unit for a conference system is provided that includes a front board, side walls and a plurality of microphone capsules arranged in or on the front board mountable on or in a ceiling of a conference room. The microphone array system or unit is adapted for generating a steerable beam within a maximum detection angle range. The microphone array system or microphone array unit includes a processing unit which is configured to receive the output signals of the microphone capsules and to steer the beam based on the received output signal of the microphone array. The processing unit is configured to control the microphone array to limit the detection angle range to exclude at least one predetermined exclusion sector in which a noise source is located.

Systems, apparatus, and methods for processing audio signals associated with conferencing devices communicatively connected in a daisy-chain configuration using local connection ports included on each device are provided. One method involving a first conferencing device comprises receiving auxiliary mixed microphone signal(s) from at least one other conferencing device via at least one local connection port, each auxiliary signal comprising a mix of microphone signals captured by the at least one other conferencing device; determining a gain adjustment value for each auxiliary mixed microphone signal based on a daisy-chain position of the at least one other conferencing device relative to the position of the first conferencing device; adjusting a gain value for each auxiliary mixed microphone signal based on the corresponding gain adjustment value; generating a loudspeaker output signal from the gain-adjusted auxiliary mixed microphone signal(s); and providing the loudspeaker signal to the loudspeaker of the first conferencing device.

A microphone array system or microphone array unit for a conference system is provided that includes a front board, side walls and a plurality of microphone capsules arranged in or on the front board mountable on or in a ceiling of a conference room. The microphone array system or unit is adapted for generating a steerable beam within a maximum detection angle range. The microphone array system or microphone array unit includes a processing unit which is configured to receive the output signals of the microphone capsules and to steer the beam based on the received output signal of the microphone array. The processing unit is configured to control the microphone array to limit the detection angle range to exclude at least one predetermined exclusion sector in which a noise source is located.

An audio signal processing method includes selecting a channel group of at least two channels according to a predetermined reference, from among audio signals of at least three channels; and controlling a gain of the audio signal of each channel of the selected channel group, according to a volume level of the audio signal of each channel of the channel group.

An apparatus including an interface and a processor. The interface may be configured to receive video frames corresponding to an interior of a vehicle. The processor may be configured to perform video operations on the video frames to detect objects in the video frames, detect one or more passengers based on the objects detected in the video frames, determine a location of each of the passengers detected, determine which of the passengers may be an audio source and generate a control signal in response to the audio source. The control signal may be configured to adjust an input of a microphone towards the audio source. The video operations may be used to determine the location and the audio source.

A video conference apparatus including an image detection device, a sound source detection device, and a processor and a video conference method are provided. The image detection device obtains a conference image of a conference space. The sound source detection device detects a sound source of the conference space and outputs a positioning signal corresponding to the sound source. The processor receives the conference image and the positioning signal to select a first sub-conference image corresponding to the sound source in the conference image according to the positioning signal. The processor detects a human face image closest to a central axis of the first sub-conference image, selects a second sub-conference image in the conference image by treating the human face image as an image center, and outputs the second sub-conference image. Therefore, an appropriate close-up conference image is automatically generated, so that a favorable video conference experience is provided.