Speech processing system, speech processing method, speech processing program, vehicle including speech processing system on board, and microphone placing method
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United States of America Patent
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Feb 27, 2018
Grant Date -
Apr 21, 2016
app pub date -
Jan 16, 2014
filing date -
May 23, 2013
priority date (Note) -
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Abstract
A system of this invention is directed to a speech processing system that efficiently performs noise suppression processing for a plurality of noise sources spreading in a lateral direction with respect to a speaker of interest. The speech processing system includes a microphone array including a plurality of microphones, each of which inputs a sound mixture including speech of a speaker of interest and noise from a noise source region including a plurality of noise sources placed in a lateral direction with respect to the speaker of interest, and outputs a mixture signal including a speech signal and a noise signal, the plurality of microphones being arranged such that a difference between respective distances from the plurality of microphones to the speaker of interest becomes different from a difference between respective distances from the plurality of microphones to the noise source region, and a noise suppressor that suppresses the noise based on the mixture signals output from the plurality of microphones.
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