Title:
NOISE ELIMINATION SYSTEM, AUDIO DETECTION SYSTEM, AUDIO RECOGNITION SYSTEM, NOISE ELIMINATION METHOD, AND NOISE ELIMINATION PROGRAM
Document Type and Number:
WIPO Patent Application WO/2014/112023
Kind Code:
A1
Abstract:
Provided are: a noise elimination system that highly precisely infers the noise contained in an input signal, and highly precisely eliminates the noise contained in the input signal using the inferred noise; an audio detection system; an audio recognition system; a noise elimination method; and a noise elimination program. The present invention is provided with: a first noise inferring unit (111) that infers a steady noise component contained in a first input signal; a first noise elimination unit (121) that eliminates the steady noise component from the first input signal; a second noise inferring unit (112) that re-infers the steady noise component contained in the first input signal; a third noise inferring unit (113) that infers a non-steady noise component configured from the sum of a stead y noise component and a non-steady noise component contained in the first input signal; an inferred noise combining unit (114) that infers a steady noise component and a second non-steady noise component contained in the first input signal; and a second noise elimination unit (122) that eliminates the steady noise component and the second non-steady noise component contained in the first input signal.
Inventors:
TSUJIKAWA MASANORI (JP)
HANAZAWA KEN (JP)
KOMEIJI SHUJI (JP)
HANAZAWA KEN (JP)
KOMEIJI SHUJI (JP)
Application Number:
PCT/JP2013/007573
Publication Date:
July 24, 2014
Filing Date:
December 25, 2013
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
G10L15/04; G10L21/0232; G10L15/20; G10L21/0264
Foreign References:
| JP2003195882A | 2003-07-09 | |||
| JP2006163231A | 2006-06-22 | |||
| JP2011186384A | 2011-09-22 | |||
| JP2000163099A | 2000-06-16 | |||
| JP2009075536A | 2009-04-09 | |||
| JPH0667691A | 1994-03-11 |
Attorney, Agent or Firm:
IWAKABE, Fuyuki et al. (JP)
Rock face Fuyuki (JP)
Rock face Fuyuki (JP)
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