BRPI0516739A - dispositivo de codificação escalável, dispositivo de decodificação escalável, e método dos mesmos - Google Patents

dispositivo de codificação escalável, dispositivo de decodificação escalável, e método dos mesmos

Info

Publication number
BRPI0516739A
BRPI0516739A BRPI0516739-6A BRPI0516739A BRPI0516739A BR PI0516739 A BRPI0516739 A BR PI0516739A BR PI0516739 A BRPI0516739 A BR PI0516739A BR PI0516739 A BRPI0516739 A BR PI0516739A
Authority
BR
Brazil
Prior art keywords
signal
encoding
channel signal
scalable
monaural
Prior art date
Application number
BRPI0516739-6A
Other languages
English (en)
Inventor
Michiyo Goto
Koji Yoshida
Hiroyuki Ehara
Masahiro Oshikiri
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BRPI0516739A publication Critical patent/BRPI0516739A/pt

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/24—Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Stereo-Broadcasting Methods (AREA)

Abstract

DISPOSITIVO DE CODIFICAçãO ESCALáVEL, DISPOSITIVO DE DECODIFICAçãO ESCALáVEL, E MéTODO DOS MESMOS. A presente invenção refere-se a um dispositivo de codificação escalável para realizar a codificação escalável por codificação CELP de um sinal de som estéreo e aperfeiçoar a eficiência de codificação. Neste dispositivo, um somador (101) e um multiplicador (102) obtêm uma média de um primeiro sinal de canal CH1 e um segundo sinal de canal CH2 como um sinal monaural M. Um codificador CELP (103) de um sinal monaural submete o sinal monaural M à codificação CELP, lança o parâmetro codificado obtido para fora, e lança um sinal monaural sintetizado M' utilizando o parâmetro codificado para um primeiro codificador de sinal (104). Ao utilizar o sinal monaural sintetizado M' e o segundo sinal de canal CH2, o primeiro codificador de sinal de canal (104) submete o primeiro sinal de canal CH1 à codificação CELP para reduzir a soma da distorção de codificação do primeiro sinal de canal CH1 e a distorção de codificação do segundo sinal de canal CH2.
BRPI0516739-6A 2004-09-30 2005-09-28 dispositivo de codificação escalável, dispositivo de decodificação escalável, e método dos mesmos BRPI0516739A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004288327 2004-09-30
PCT/JP2005/017838 WO2006035810A1 (ja) 2004-09-30 2005-09-28 スケーラブル符号化装置、スケーラブル復号装置、及びこれらの方法

Publications (1)

Publication Number Publication Date
BRPI0516739A true BRPI0516739A (pt) 2008-09-23

Family

ID=36118956

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0516739-6A BRPI0516739A (pt) 2004-09-30 2005-09-28 dispositivo de codificação escalável, dispositivo de decodificação escalável, e método dos mesmos

Country Status (10)

Country Link
US (1) US7904292B2 (pt)
EP (1) EP1801783B1 (pt)
JP (1) JP4963965B2 (pt)
KR (1) KR20070061847A (pt)
CN (1) CN101031960A (pt)
AT (1) ATE440361T1 (pt)
BR (1) BRPI0516739A (pt)
DE (1) DE602005016130D1 (pt)
RU (1) RU2007111717A (pt)
WO (1) WO2006035810A1 (pt)

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Publication number Priority date Publication date Assignee Title
US7848925B2 (en) * 2004-09-17 2010-12-07 Panasonic Corporation Scalable encoding apparatus, scalable decoding apparatus, scalable encoding method, scalable decoding method, communication terminal apparatus, and base station apparatus
US20080255832A1 (en) * 2004-09-28 2008-10-16 Matsushita Electric Industrial Co., Ltd. Scalable Encoding Apparatus and Scalable Encoding Method
EP1818911B1 (en) * 2004-12-27 2012-02-08 Panasonic Corporation Sound coding device and sound coding method
BRPI0519454A2 (pt) * 2004-12-28 2009-01-27 Matsushita Electric Ind Co Ltd aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel
WO2006118179A1 (ja) * 2005-04-28 2006-11-09 Matsushita Electric Industrial Co., Ltd. 音声符号化装置および音声符号化方法
JP4850827B2 (ja) * 2005-04-28 2012-01-11 パナソニック株式会社 音声符号化装置および音声符号化方法
JPWO2008084688A1 (ja) * 2006-12-27 2010-04-30 パナソニック株式会社 符号化装置、復号装置及びこれらの方法
US8364472B2 (en) * 2007-03-02 2013-01-29 Panasonic Corporation Voice encoding device and voice encoding method
JP5377287B2 (ja) * 2007-03-02 2013-12-25 パナソニック株式会社 ポストフィルタ、復号装置およびポストフィルタ処理方法
CN102576539B (zh) 2009-10-20 2016-08-03 松下电器（美国）知识产权公司 编码装置、通信终端装置、基站装置以及编码方法
US9779739B2 (en) * 2014-03-20 2017-10-03 Dts, Inc. Residual encoding in an object-based audio system
JP7092047B2 (ja) * 2019-01-17 2022-06-28 日本電信電話株式会社 符号化復号方法、復号方法、これらの装置及びプログラム

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US4815132A (en) * 1985-08-30 1989-03-21 Kabushiki Kaisha Toshiba Stereophonic voice signal transmission system
JP2746039B2 (ja) * 1993-01-22 1998-04-28 日本電気株式会社 音声符号化方式
JPH06259097A (ja) 1993-03-09 1994-09-16 Olympus Optical Co Ltd コード駆動音源音声符号化装置
JPH09261065A (ja) 1996-03-25 1997-10-03 Mitsubishi Electric Corp 量子化装置及び逆量子化装置及び量子化逆量子化システム
JP3622365B2 (ja) 1996-09-26 2005-02-23 ヤマハ株式会社 音声符号化伝送方式
JP3531780B2 (ja) 1996-11-15 2004-05-31 日本電信電話株式会社 音声符号化方法および復号化方法
US6345246B1 (en) * 1997-02-05 2002-02-05 Nippon Telegraph And Telephone Corporation Apparatus and method for efficiently coding plural channels of an acoustic signal at low bit rates
JP3134817B2 (ja) * 1997-07-11 2001-02-13 日本電気株式会社 音声符号化復号装置
DE19742655C2 (de) 1997-09-26 1999-08-05 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Codieren eines zeitdiskreten Stereosignals
SE519552C2 (sv) * 1998-09-30 2003-03-11 Ericsson Telefon Ab L M Flerkanalig signalkodning och -avkodning
US6973184B1 (en) * 2000-07-11 2005-12-06 Cisco Technology, Inc. System and method for stereo conferencing over low-bandwidth links
SE519985C2 (sv) * 2000-09-15 2003-05-06 Ericsson Telefon Ab L M Kodning och avkodning av signaler från flera kanaler
SE0202159D0 (sv) * 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
JP2003099095A (ja) 2001-09-20 2003-04-04 Canon Inc オーディオ符号化装置、方法、記録媒体及びプログラム
WO2003091989A1 (en) 2002-04-26 2003-11-06 Matsushita Electric Industrial Co., Ltd. Coding device, decoding device, coding method, and decoding method
JP2003323199A (ja) * 2002-04-26 2003-11-14 Matsushita Electric Ind Co Ltd 符号化装置、復号化装置及び符号化方法、復号化方法
KR100528325B1 (ko) * 2002-12-18 2005-11-15 삼성전자주식회사 비트율 조절이 가능한 스테레오 오디오 부호화 및복호화방법 및 그 장치
US7809579B2 (en) * 2003-12-19 2010-10-05 Telefonaktiebolaget Lm Ericsson (Publ) Fidelity-optimized variable frame length encoding

Also Published As

Publication number Publication date
DE602005016130D1 (de) 2009-10-01
US7904292B2 (en) 2011-03-08
ATE440361T1 (de) 2009-09-15
JPWO2006035810A1 (ja) 2008-05-15
EP1801783A1 (en) 2007-06-27
RU2007111717A (ru) 2008-10-10
US20080255833A1 (en) 2008-10-16
EP1801783A4 (en) 2007-12-05
KR20070061847A (ko) 2007-06-14
JP4963965B2 (ja) 2012-06-27
EP1801783B1 (en) 2009-08-19
CN101031960A (zh) 2007-09-05
WO2006035810A1 (ja) 2006-04-06

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]