Title:
AUDIO PROCESSING DEVICE, AUDIO PROCESSING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2012/114946
Kind Code:
A1
Abstract:
[Problem] To provide a novel and improved audio processing device, audio processing method, and program that are able to favorably suppress feedback even if reflected sounds or non-feedback sounds are generated. [Solution] The audio processing device is provided with: a frequency domain conversion unit that converts audio signals input from a microphone into a frequency domain in each frame; and a gain adjustment unit that performs gain adjustment for each band with respect to the audio signal converted into frequency domains. The gain adjustment unit acquires an autocorrelation value of the power of the audio signal between frames for each band, and sets the adjustment quantity of the gain in accordance with the acquired autocorrelation value.
Inventors:
SAKURABA YOHEI (JP)
KIHARA NOBUYUKI (JP)
KIHARA NOBUYUKI (JP)
Application Number:
PCT/JP2012/053418
Publication Date:
August 30, 2012
Filing Date:
February 14, 2012
Export Citation:
Assignee:
SONY CORP (JP)
SAKURABA YOHEI (JP)
KIHARA NOBUYUKI (JP)
SAKURABA YOHEI (JP)
KIHARA NOBUYUKI (JP)
International Classes:
H04R3/02
Foreign References:
| JP2003032780A | 2003-01-31 | |||
| JP2003274480A | 2003-09-26 | |||
| JP2006121188A | 2006-05-11 | |||
| JPS631296A | 1988-01-06 | |||
| JP2005236713A | 2005-09-02 | |||
| JPH08223684A | 1996-08-30 | |||
| JPH03237899A | 1991-10-23 |
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (JP)
Yoshiaki Kameya (JP)
Yoshiaki Kameya (JP)
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Claims:
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