Title:
MUTING A SOUND SOURCE WITH AN ARRAY OF MICROPHONES
Document Type and Number:
WIPO Patent Application WO/2015/108798
Kind Code:
A3
Abstract:
A processing system can include tracking microphone array(s), audio -tracking circuitry configured to detect a location of audio sources from audio signals from the array(s), and processing circuitry. The processing circuitry can be configured to: identify a first microphone that has a strongest signal strength; estimate a location of an active speaker based on at least an output of the audio -tracking circuitry; determine whether a second microphone for the active speaker is affected by an acoustic obstacle based on the location of the active speaker and a location of the first microphone that has the strongest signal strength; estimate attenuation for microphones based on a comparison of actual signal strengths of the microphones with estimated signal strengths of the microphones that are estimated based on microphone signals of the second microphone for the active speaker; and modify the attenuation based on an estimated location of the acoustic obstacle.
Inventors:
BAO FENG (US)
KUNAPULI SUBRAHMANYAM (US)
YANG FEI (US)
SUNDSBARM TOR (US)
KUNAPULI SUBRAHMANYAM (US)
YANG FEI (US)
SUNDSBARM TOR (US)
Application Number:
PCT/US2015/010957
Publication Date:
January 28, 2016
Filing Date:
January 12, 2015
Export Citation:
Assignee:
CISCO TECH INC (US)
International Classes:
H04M3/56; H04N7/15; H04R3/00
Foreign References:
| JP2006180039A | 2006-07-06 | |||
| US20070016426A1 | 2007-01-18 |
Other References:
CE WANG ET AL: "Robust automatic video-conferencing with multiple cameras and microphones", MULTIMEDIA AND EXPO, 2000. ICME 2000. 2000 IEEE INTERNATIONAL CONFEREN CE ON NEW YORK, NY, USA 30 JULY-2 AUG. 2000, PISCATAWAY, NJ, USA,IEEE, US, vol. 3, 30 July 2000 (2000-07-30), pages 1585 - 1588, XP010512810, ISBN: 978-0-7803-6536-0
Attorney, Agent or Firm:
GLEITZ, Ryan, M. (One N. LaSalle StreetSuite 290, Chicago IL, US)
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