Title:
SOUND SIGNAL HIGH FREQUENCY COMPENSATION METHOD, SOUND SIGNAL POST-PROCESSING METHOD, SOUND SIGNAL DECODING METHOD, DEVICES THEREFOR, PROGRAM, AND RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2022/097242
Kind Code:
A1
Abstract:
An n-th channel compensated decoded sound signal ~X'n that is a signal obtained by compensating for high frequencies of an n-channel refined decoded sound signal ~Xn obtained by performing signal processing in a time domain on an n-th channel decoded sound signal ^Xn (n is an integer from 1 to N inclusive) that is a decoded sound signal of each stereo channel obtained by decoding a stereo code CS is obtained on a frame-by-frame basis. On this occasion, an n-th channel high frequency compensation gain estimation step for obtaining an n-th channel high frequency compensation gain ρn that is a value for bringing the energy at high frequencies of the n-th channel compensated decoded sound signal ~X'n close to the energy at high frequencies of the n-channel decoded sound signal ^Xn is performed, and a signal obtained by adding the n-th channel refined decoded sound signal ~Xn and a signal obtained by multiplying a high-frequency component of the n-th channel decoded sound signal ^Xn by the n-th channel high frequency compensation gain ρn is obtained as the n-th channel compensated decoded sound signal and outputted.
Inventors:
SUGIURA RYOSUKE (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
MORIYA TAKEHIRO (JP)
KAMAMOTO YUTAKA (JP)
Application Number:
PCT/JP2020/041405
Publication Date:
May 12, 2022
Filing Date:
November 05, 2020
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE (JP)
International Classes:
G10L19/008; G10L21/0388
Domestic Patent References:
| WO2006070751A1 | 2006-07-06 |
Foreign References:
| JP2019508737A | 2019-03-28 | |||
| JP2010525403A | 2010-07-22 | |||
| JP2019500641A | 2019-01-10 | |||
| JP2001521648A | 2001-11-06 | |||
| JP2005114814A | 2005-04-28 |
Attorney, Agent or Firm:
NAKAO, Naoki et al. (JP)
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