Title:
雑音抑圧装置及び雑音抑圧方法
Document Type and Number:
Japanese Patent JP4162604
Kind Code:
B2
Abstract:
A noise estimation unit estimates a noise signal in an input signal. A section decision unit distinguishes a target signal section from a noise signal section in the input signal. A noise suppression unit suppresses the noise signal based on a first suppression coefficient from the input signal. A noise excess suppression unit suppresses the noise signal based on a second suppression coefficient from the input signal. The second suppression coefficient is larger than the first suppression coefficient. A switching unit switches between an output signal from the noise suppression unit and an output signal from the noise excess suppression unit based on a decision result of the section decision unit.
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Inventors:
Emperor Amada
Satoshi Kawamura
Ryosuke Koshiba
Satoshi Kawamura
Ryosuke Koshiba
Application Number:
JP2004003108A
Publication Date:
October 08, 2008
Filing Date:
January 08, 2004
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G10L15/20; G10L15/04; G10L15/28; G10L19/00; G10L21/02; G10L21/0208; G10L21/0232; G10L25/78; H04B15/00; H04M1/60; H04R3/00
Domestic Patent References:
| JP8221092A | ||||
| JP8022297A | ||||
| JP8167879A |
Foreign References:
| WO1999050825A1 |
Attorney, Agent or Firm:
Hiroshi Horiguchi
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