Satellite microphones for improved speaker detection and zoom
First Claim
1. A method of detecting a speaker comprising:
- extending audio range of a local microphone array of a conferencing base station using satellite microphones;
computing location information for location of the satellite microphones relative to the conferencing base station;
processing the location information and audio signals of the local microphone array and the satellite microphones for automatic detection of a speaker relative to the conferencing base station; and
estimating location distances of the satellite microphones from the conferencing base station based, at least in part, on panoramic camera images of the satellite microphones.
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Accused Products
Abstract
Architecture for exploiting satellite microphones and employing other techniques of conference room camera/microphone systems to significantly improve the true positive rate (reduce false positives) in sound source localization (SSL). Techniques for realizing the improvement include using an LED emitter to determine the precise location of the satellite microphones on a table, using the base SSL and external sounds to determine the approximate location of the satellite microphone on the table, using the satellite microphone phase to improve the SSL performance, using the satellite microphone amplitude to improve the active speaker detector (ASD) performance, and using the satellite microphones to estimate camera zoom.
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Citations
18 Claims
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1. A method of detecting a speaker comprising:
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extending audio range of a local microphone array of a conferencing base station using satellite microphones; computing location information for location of the satellite microphones relative to the conferencing base station; processing the location information and audio signals of the local microphone array and the satellite microphones for automatic detection of a speaker relative to the conferencing base station; and estimating location distances of the satellite microphones from the conferencing base station based, at least in part, on panoramic camera images of the satellite microphones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for detecting a speaker including:
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a conferencing base station including a local microphone array; a plurality of satellite microphones connected to the conferencing base station; and a computing device configured to compute location information for location of the satellite microphones relative to the conferencing base station, detect a speaker relative to the conferencing base station based on the location information and audio signals received from the local microphone array and the plurality of satellite microphones, and estimate location distances of each of the plurality of satellite microphones from the conferencing base station based, at least in part, on panoramic camera images of each of the plurality of satellite microphones. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. One of an optical disk, a magnetic storage device or a non-volatile memory device having computer-executable instructions stored thereon that, when executed by a computer, cause the computer to:
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estimate the location distances of each of a plurality of satellite microphones from a conferencing base station is based, at least in part, on panoramic camera images of each of a plurality of satellite microphones; and process the location distances and audio signals of a local microphone array on the conferencing base station and the plurality of satellite microphones for detection of a speaker relative to the conferencing base station. - View Dependent Claims (18)
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Specification