Title:
SOUND SIGNAL ENCODING METHOD, SOUND SIGNAL DECODING METHOD, SOUND SIGNAL ENCODING DEVICE, SOUND SIGNAL DECODING DEVICE, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2021/181473
Kind Code:
A1
Abstract:
In the present invention, a downmixing unit 110 obtains a downmixing signal, which is obtained by mixing an inputted left-channel input sound signal and an inputted right-channel input sound signal. When the left channel comes first, a determination is made to use the downmixing signal without modification in a left channel subtraction gain estimation unit 120 and a left channel signal subtraction unit 130, and to use a delayed downmixing signal in a right channel subtraction gain estimation unit 140 and a right channel signal subtraction unit 150. When the right channel comes first, a determination is made to use the downmixing signal without modification in the right channel subtraction gain estimation unit 140 and the right channel signal subtraction unit 150, and to use the delayed downmixing signal in the left channel subtraction gain estimation unit 120 and the left channel signal subtraction unit 130.
Inventors:
SUGIURA RYOSUKE (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
Application Number:
PCT/JP2020/010081
Publication Date:
September 16, 2021
Filing Date:
March 09, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L19/008
Domestic Patent References:
| WO2010140350A1 | 2010-12-09 | |||
| WO2010097748A1 | 2010-09-02 |
Foreign References:
| JP2018533056A | 2018-11-08 | |||
| JP2011522472A | 2011-07-28 | |||
| JP2019536112A | 2019-12-12 | |||
| JP2010525403A | 2010-07-22 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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