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Title:
ACOUSTIC PROCESSING SYSTEM, ACOUSTIC PROCESSING DEVICE, ACOUSTIC PROCESSING METHOD, ACOUSTIC PROCESSING PROGRAM, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2005/024789
Kind Code:
A1
Abstract:
An acoustic processing device (10) includes: a loudspeaker (12) for outputting a sound expressed by a first acoustic signal; acoustic signal generation means (13) for collecting the sound outputted from the loudspeaker (12) and speech of a speaker and generating a second acoustic signal; echo suppressing means (14) for suppressing an echo component of the second acoustic signal and outputting the second acoustic signal having the suppressed echo component as a third acoustic signal; acoustic signal storage means (15) for storing the third acoustic signal; speech detection means (16) for detecting the starting end of the section where the speech of the speaker exists from the third acoustic signal outputted from the echo suppression means (14); control means (17) for controlling the acoustic signal storage means (15) so that the acoustic signal storage means (15) outputs the third speech signal of the moment going back from the starting end of the section containing the speech of the speaker detected by the speech detection means (16), by a predetermined time, and after as a fourth acoustic signal.

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Inventors:
KUNIEDA NOBUYUKI
NOMURA KAZUYA
NAKAMURA KAZUHIRO
Application Number:
PCT/JP2004/012798
Publication Date:
March 17, 2005
Filing Date:
August 27, 2004
Export Citation:
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Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
KUNIEDA NOBUYUKI
NOMURA KAZUYA
NAKAMURA KAZUHIRO
International Classes:
G10L15/20; G10L15/00; G10L15/22; G10L21/0208; H03H17/02; H04R3/02; (IPC1-7): G10L21/02; G10L11/02
Domestic Patent References:
WO2001093554A22001-12-06
WO2002060057A12002-08-01
Foreign References:
JP2002041073A2002-02-08
JPH08331022A1996-12-13
JPH06230799A1994-08-19
JPH08110794A1996-04-30
JPH098708A1997-01-10
JPH09204195A1997-08-05
JPH103298A1998-01-06
JP2001075590A2001-03-23
Attorney, Agent or Firm:
Ariga, Gunichiro (2-4-9 Yoyog, Shibuya-ku Tokyo 53, JP)
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