Title:
SOUND SIGNAL PROCESSING APPARATUS, SOUND ENCODING APPARATUS AND SOUND DECODING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2011/048792
Kind Code:
A1
Abstract:
Provided is a sound signal processing apparatus capable of performing a sound signal processing, such as time scaling or frequency modulation, with only a small calculation amount. A sound signal processing apparatus for converting an input sound signal sequence by use of a predetermined adjustment factor comprises: a filter bank (2601) that is operative to convert an input sound signal sequence to a QMF (Quadrature Mirror Filter) factor sequence by use of a QMF analysis filter; and an adjusting unit (2602) for adjusting the QMF factor sequence by causing the QMF factor sequence to be dependent on the predetermined adjustment factor.
Inventors:
ISHIKAWA TOMOKAZU
NORIMATSU TAKESHI
CHONG KOK SENG
ZHOU HUAN
ZHONG HAISHAN
NORIMATSU TAKESHI
CHONG KOK SENG
ZHOU HUAN
ZHONG HAISHAN
Application Number:
PCT/JP2010/006180
Publication Date:
April 28, 2011
Filing Date:
October 19, 2010
Export Citation:
Assignee:
PANASONIC CORP (JP)
ISHIKAWA TOMOKAZU
NORIMATSU TAKESHI
CHONG KOK SENG
ZHOU HUAN
ZHONG HAISHAN
ISHIKAWA TOMOKAZU
NORIMATSU TAKESHI
CHONG KOK SENG
ZHOU HUAN
ZHONG HAISHAN
International Classes:
G10L21/04; H03M7/30; G10L21/0388
Domestic Patent References:
| WO2008102527A1 | 2008-08-28 | |||
| WO2007126015A1 | 2007-11-08 |
Foreign References:
| JP2010078915A | 2010-04-08 |
Other References:
"Improved Phase Vocoder Time - Scale Modification of Audio", IEEE TRANS ASP, vol. 7, no. 3, May 1989 (1989-05-01)
Attorney, Agent or Firm:
NII, Hiromori (JP)
New house Extensive 守 (JP)
New house Extensive 守 (JP)
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