AUDIO-PROCESSING DEVICE, CONTROL METHOD THEREFOR, RECORDING MEDIUM CONTAINING CONTROL PROGRAM FOR SAID AUDIO-PROCESSING DEVICE, VEHICLE PROVIDED WITH SAID AUDIO-PROCESSING DEVICE, INFORMATION-PROCESSING DEVICE, AND INFORMATION-PROCESSING SYSTEM

Title:

Document Type and Number:

WIPO Patent Application WO/2012/096072

Kind Code:

A1

Abstract:

This device is an audio-processing device that obtains an artificial voice from a mixed sound containing a desired voice and noise. Said audio-processing device is characterized by the provision of a first microphone, a second microphone, an acoustic insulator disposed between said first and second microphones, and a noise-suppression circuit. A first mixed sound containing a desired voice and noise is inputted to the first microphone, which outputs a first mixed signal. The second microphone is open to the same acoustic space as the first microphone. A second mixed sound, containing the desired voice and the noise in different proportions from the first mixed sound, is inputted to the second microphone, which outputs a second mixed signal. The noise-suppression circuit suppresses an estimated noise signal on the basis of the first and second mixed signals and outputs an artificial voice signal. This configuration makes it possible to accurately estimate noise in an acoustic space containing both a desired voice and noise and reconstruct an artificial voice similar to the desired voice.

Inventors:

ARAKAWA TAKAYUKI (JP)
SUGIYAMA AKIHIKO (JP)

Application Number:

PCT/JP2011/077995

Publication Date:

July 19, 2012

Filing Date:

December 03, 2011

Export Citation:

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Assignee:

NEC CORP (JP)
ARAKAWA TAKAYUKI (JP)
SUGIYAMA AKIHIKO (JP)

International Classes:

H04R3/00; G10L15/20; G10L21/0208; H04R1/34; H04R1/40

Domestic Patent References:

WO2009051132A1

2009-04-23

Foreign References:

JPH07231495A	1995-08-29
JP2005229420A	2005-08-25
JP2004215066A	2004-07-29
JP2005236407A	2005-09-02

Attorney, Agent or Firm:

KATO TAKASHI (JP)
Takushi Kato (JP)

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Claims:

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