Sound source separation system, sound source separation method, and acoustic signal acquisition device
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United States of America Patent
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Jul 3, 2012
Grant Date -
Dec 31, 2009
app pub date -
Dec 7, 2005
filing date -
Dec 17, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a sound source separation system, a sound source separation method, and an acoustic signal acquisition device which can precisely separate a target sound and a disturbance sound coming from an arbitrary direction, and which ensures miniaturization of a device. A sound source separation system 10 comprises two microphones 21, 22 disposed side by side in a direction in which a target sound comes from, a target sound superior signal generator 30 which performs a linear combination process for emphasizing the target sound, using the received sound signals of the microphones to generate a target sound superior signal, a target sound inferior signal generator 40 which performs a linear combination process for suppressing the target sound, using the received sound signals of the microphones 21, 22, to generate a target sound inferior signal, and a separation unit 60 which separates the target sound and a disturbance sound, using a target sound superior signal spectrum and a target sound inferior signal spectrum.
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