Title:
AUDIO ENCODING APPARATUS, DECODING APPARATUS, METHOD, CIRCUIT AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2011/048815
Kind Code:
A1
Abstract:
An encoding apparatus (1) comprises: a pitch contour analyzing unit (101) for detecting information; a dynamic time warping unit (102) for generating, based on the detected information, a pitch change ratio (Tw_ratio: FIG. 18) that is the domain of a range (86) including a range (86a) in which the absolute value of the cent of the pitch change ratio is equal to or greater than 42; a first lossless encoding unit (103) for encoding the generated pitch parameter (102x); a time scaling unit (104) for shifting the signal pitch in accordance with the foregoing information; and a second encoder for encoding the shifted signal (104x).
Inventors:
ISHIKAWA TOMOKAZU
NORIMATSU TAKESHI
CHONG KOK SENG
ZHOU HUAN
ZHONG HAISHAN
NORIMATSU TAKESHI
CHONG KOK SENG
ZHOU HUAN
ZHONG HAISHAN
Application Number:
PCT/JP2010/006234
Publication Date:
April 28, 2011
Filing Date:
October 21, 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:
G10L19/00; G10L19/008; G10L19/02; G10L19/26; G10L19/09
Domestic Patent References:
| WO2006046761A1 | 2006-05-04 |
Foreign References:
| JP2003521721A | 2003-07-15 | |||
| JPH10111694A | 1998-04-28 | |||
| JP2001188600A | 2001-07-10 | |||
| JP2002162996A | 2002-06-07 | |||
| JP2002268694A | 2002-09-20 | |||
| JPS60263377A | 1985-12-26 | |||
| JPS60263375A | 1985-12-26 | |||
| US20080004869A1 | 2008-01-03 |
Other References:
MILAN JELINEK: "Wideband Speech Coding Advances in VMR-WB Standard", IEEE TRANSACTIONS ON AUDIO, SPEECH AND LANGUAGE PROCESSING, vol. 15, no. 4, May 2007 (2007-05-01), XP011177208, DOI: doi:10.1109/TASL.2007.894514
XUEJING SUN: "Pitch Detection and Voice Quality Analysis Using Subharmonic-to-Harmonic Ratio", IEEE ICASSP, 2002, pages 333 - 336
BERND EDLER: "A Time-warped MDCT Approach To Speech Transform Coding", AES 126TH CONVENTION, May 2000 (2000-05-01)
See also references of EP 2492911A4
XUEJING SUN: "Pitch Detection and Voice Quality Analysis Using Subharmonic-to-Harmonic Ratio", IEEE ICASSP, 2002, pages 333 - 336
BERND EDLER: "A Time-warped MDCT Approach To Speech Transform Coding", AES 126TH CONVENTION, May 2000 (2000-05-01)
See also references of EP 2492911A4
Attorney, Agent or Firm:
NII, Hiromori (JP)
New house Extensive 守 (JP)
New house Extensive 守 (JP)
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