Title:
SOUND SIGNAL REFINING METHOD, SOUND SIGNAL DECODING METHOD, DEVICES THEREFOR, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/097239
Kind Code:
A1
Abstract:
The present invention provides technology for improving a decoded sound signal using a sound signal obtained from another code when there is a sound signal obtained from the other code, said other code being a code that differs from the code serving as the source for obtaining the decoded sound signal but is derived from the same sound signal. Using a signal (hereinafter referred to as an upmixed monaural decoded sound signal) obtained by upmixing a monaural decoded sound signal, a signal (hereinafter referred to as an upmixed common signal) obtained by upmixing a decoded sound common signal obtained by downmixing decoded sound signals of channels is refined to generate a refined upmixed signal, and in each channel, a refined decoded sound signal is generated by subtracting the upmixed common signal from the decoded sound signal and adding the refined upmixed signal.
More Like This:
Inventors:
SUGIURA RYOSUKE (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
Application Number:
PCT/JP2020/041402
Publication Date:
May 12, 2022
Filing Date:
November 05, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L19/008
Domestic Patent References:
| WO2006070751A1 | 2006-07-06 |
Foreign References:
| JP2005202052A | 2005-07-28 | |||
| JP2005117132A | 2005-04-28 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
Download PDF: