Audio system signal processing control using microphone movement information

摘要

An audio conferencing system has a base station, a speaker and one or more mobile microphones, and it operates to receive audio information from both a far-end audio source and a near-end audio source and to process the audio information for transmission to a far-end audio conferencing system. At least one of the mobile microphones has a motion detection device and operates to send detected motion information to the base station. The base station operates to control the processing of audio information it receives from the microphone according to the detected microphone motion information.

主权项

1. A method of controlling a rate at which an adaptive filter in an audio conferencing system is updated, comprising:
detecting a microphone movement, the microphone associated with the audio conferencing system; receiving from the microphone an indication of the microphone movement and at the same time detecting that a double talk condition exists in the audio conferencing system; and receiving an audio signal from the microphone and using the received indication of the detected microphone movement to control the rate at which the adaptive filter is updated in response to the detected microphone movement, wherein controlling the rate at which the adaptive filter is updated comprises overriding an operation of the audio conferencing system to prevent changing the rate at which coefficients associated with an adaptive filter are updated.