Title:
SOUND SIGNAL REFINEMENT METHOD, SOUND SIGNAL DECODING METHOD, AND DEVICE, PROGRAM, AND RECORDING MEDIUM THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/097236
Kind Code:
A1
Abstract:
Provided is a technology in which, if there is a sound signal obtained from a separate code, which is a code differing from a code from which a decoded sound signal has been obtained and which is a code derived from the same sound signal, the decoded sound signal is improved using the sound signal obtained from the separate code. A refined shared signal is generated through signal refinement of a signal (hereinafter referred to as "the decoded sound shared signal") obtained by downmixing a decoded sound signal from each channel, using a monaural decoded sound signal. A refined decoded sound signal is generated for each channel by subtracting a signal obtained by upmixing the decoded sound shared signal from the decoded sound signal and adding a signal obtained by upmixing the refined shared signal.
Inventors:
SUGIURA RYOSUKE (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
Application Number:
PCT/JP2020/041399
Publication Date:
May 12, 2022
Filing Date:
November 05, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L19/08
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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