Title:
AUDIO PROCESSING DEVICE, AUDIO PROCESSING METHOD, AND RECORDING MEDIUM ON WHICH AUDIO PROCESSING PROGRAM IS RECORDED
Document Type and Number:
WIPO Patent Application WO/2012/157785
Kind Code:
A1
Abstract:
The present invention provides an audio processing device capable of suppressing an echo while minimizing degradation of a desired signal. Said audio processing device is provided with the following: a nonlinear-echo suppression means that suppresses a nonlinear echo in an input signal; a determination means that uses suppression results from the nonlinear-echo suppression means to determine the presence or absence of a desired signal in the input signal; and a suppression-strength control means that, if it has been determined that the desired signal is present in the input signal, reduces the strength of the nonlinear-echo suppression performed by the nonlinear-echo suppression means.
Inventors:
HOUSHUYAMA OSAMU (JP)
Application Number:
PCT/JP2012/063404
Publication Date:
November 22, 2012
Filing Date:
May 18, 2012
Export Citation:
Assignee:
NEC CORP (JP)
HOUSHUYAMA OSAMU (JP)
HOUSHUYAMA OSAMU (JP)
International Classes:
H04B3/23; H04R3/02
Domestic Patent References:
| WO2009051197A1 | 2009-04-23 |
Foreign References:
| JP2007189536A | 2007-07-26 | |||
| JP2003101445A | 2003-04-04 | |||
| JP2007060644A | 2007-03-08 | |||
| US6125179A | 2000-09-26 |
Attorney, Agent or Firm:
SHIMOSAKA, NAOKI (JP)
Naoki Shimosaka (JP)
Naoki Shimosaka (JP)
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Claims: