Title:
SOUND SIGNAL REFINEMENT METHOD, SOUND SIGNAL DECODING METHOD, DEVICE FOR SAME, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/097235
Kind Code:
A1
Abstract:
Provided is a technology which improves a decoded sound signal by using a sound signal obtained from another code, when there is the sound signal obtained from the other code that is derived from the same signal and is different from a code that is the origin for obtaining the decoded sound signal. A refined common signal is generated by refining a signal (hereinafter, referred to as a decoded sound common signal), which is obtained by down-mixing decoded sound signals of respective channels, by using a monaural decoded sound signal, and, in the respective channels, a refined decoded sound signal is generated by subtracting the decoded sound common signal from the decoded sound signal, and adding the refined common signal.
Inventors:
SUGIURA RYOSUKE (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
Application Number:
PCT/JP2020/041398
Publication Date:
May 12, 2022
Filing Date:
November 05, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L19/008
Domestic Patent References:
| WO2007116809A1 | 2007-10-18 |
Foreign References:
| JP2005202052A | 2005-07-28 | |||
| JP2005117132A | 2005-04-28 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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