BRPI0516201A - aparelho de codificação escalonável e método de codificação escalonável - Google Patents

aparelho de codificação escalonável e método de codificação escalonável

Info

Publication number
BRPI0516201A
BRPI0516201A BRPI0516201-7A BRPI0516201A BRPI0516201A BR PI0516201 A BRPI0516201 A BR PI0516201A BR PI0516201 A BRPI0516201 A BR PI0516201A BR PI0516201 A BRPI0516201 A BR PI0516201A
Authority
BR
Brazil
Prior art keywords
coding
celp
scalable coding
channel
difference
Prior art date
Application number
BRPI0516201-7A
Other languages
English (en)
Inventor
Michiyo Goto
Koji Yoshida
Original Assignee
Matsushita Electric Industrial 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of BRPI0516201A publication Critical patent/BRPI0516201A/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
    • G10L19/008—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
    • 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
    • G10L19/04—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)

Abstract

APARELHO DE CODIFICAçãO ESCALONáVEL MéTODO DE CODIFICAçãO ESCALONáVEL. A presente invenção refere-se a um aparelho de codificação escalonável onde sinais de áudio em estéreo podem ser codificados de forma escalonável pelo uso de uma codificação de CELP para melhoria da eficiência de codificação. No aparelho, um adicionador (101) e um multiplicador (102) obtêm uma média de um primeiro e de um segundo sinais de canal (CH1, CH2) como um sinal monofónico (M). Uma parte de codificação de CELP (103) realiza uma codificação de CELP do sinal monofónico (M). Uma primeira parte de codificação de informação de diferença de canal (104) realiza uma codificação do primeiro sinal de canal (CH1) em conformidade com a codificação de CELP e obtém uma diferença entre um parâmetro codificado resultante e um parâmetro codificado extraído a partir da parte de codificação de CELP (103). A primeira parte de codificação de informação de diferença de canal (104) então codifica esta diferença e extrai o parâmetro codificado resultante.
BRPI0516201-7A 2004-09-28 2005-09-26 aparelho de codificação escalonável e método de codificação escalonável BRPI0516201A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004282525 2004-09-28
PCT/JP2005/017618 WO2006035705A1 (ja) 2004-09-28 2005-09-26 スケーラブル符号化装置およびスケーラブル符号化方法

Publications (1)

Publication Number Publication Date
BRPI0516201A true BRPI0516201A (pt) 2008-08-26

Family

ID=36118851

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0516201-7A BRPI0516201A (pt) 2004-09-28 2005-09-26 aparelho de codificação escalonável e método de codificação escalonável

Country Status (7)

Country Link
US (1) US20080255832A1 (pt)
EP (1) EP1801782A4 (pt)
JP (1) JP4555299B2 (pt)
KR (1) KR20070061843A (pt)
CN (1) CN101027718A (pt)
BR (1) BRPI0516201A (pt)
WO (1) WO2006035705A1 (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100010811A1 (en) * 2006-08-04 2010-01-14 Panasonic Corporation Stereo audio encoding device, stereo audio decoding device, and method thereof
EP2624253A3 (en) * 2007-10-22 2013-11-06 Electronics and Telecommunications Research Institute Multi-object audio encoding and decoding method and apparatus thereof
CN105225667B (zh) 2009-03-17 2019-04-05 杜比国际公司 编码器系统、解码器系统、编码方法和解码方法
EP2437397A4 (en) * 2009-05-29 2012-11-28 Nippon Telegraph & Telephone CODING DEVICE, DECODING DEVICE, CODING METHOD, DECODING METHOD AND PROGRAM THEREFOR
CN103180899B (zh) * 2010-11-17 2015-07-22 松下电器（美国）知识产权公司 立体声信号的编码装置、解码装置、编码方法及解码方法
WO2012093290A1 (en) * 2011-01-05 2012-07-12 Nokia Corporation Multi-channel encoding and/or decoding
EP2898506B1 (en) 2012-09-21 2018-01-17 Dolby Laboratories Licensing Corporation Layered approach to spatial audio coding
US12125492B2 (en) 2015-09-25 2024-10-22 Voiceage Coproration Method and system for decoding left and right channels of a stereo sound signal
US10319385B2 (en) * 2015-09-25 2019-06-11 Voiceage Corporation Method and system for encoding left and right channels of a stereo sound signal selecting between two and four sub-frames models depending on the bit budget
EP3610481B1 (en) * 2017-04-10 2022-03-16 Nokia Technologies Oy Audio coding
CN112151045B (zh) * 2019-06-29 2024-06-04 华为技术有限公司 一种立体声编码方法、立体声解码方法和装置
CN112233682B (zh) * 2019-06-29 2024-07-16 华为技术有限公司 一种立体声编码方法、立体声解码方法和装置
WO2022097234A1 (ja) * 2020-11-05 2022-05-12 日本電信電話株式会社 音信号精製方法、音信号復号方法、これらの装置、プログラム及び記録媒体

Family Cites Families (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04150522A (ja) * 1990-10-15 1992-05-25 Sony Corp ディジタル信号処理装置
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
DE19628293C1 (de) * 1996-07-12 1997-12-11 Fraunhofer Ges Forschung Codieren und Decodieren von Audiosignalen unter Verwendung von Intensity-Stereo und Prädiktion
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
US6356211B1 (en) * 1997-05-13 2002-03-12 Sony Corporation Encoding method and apparatus and recording medium
JPH1132399A (ja) * 1997-05-13 1999-02-02 Sony Corp 符号化方法及び装置、並びに記録媒体
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
DE19959156C2 (de) * 1999-12-08 2002-01-31 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Verarbeiten eines zu codierenden Stereoaudiosignals
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
SE519981C2 (sv) * 2000-09-15 2003-05-06 Ericsson Telefon Ab L M Kodning och avkodning av signaler från flera kanaler
SE519976C2 (sv) * 2000-09-15 2003-05-06 Ericsson Telefon Ab L M Kodning och avkodning av signaler från flera kanaler
US7606703B2 (en) * 2000-11-15 2009-10-20 Texas Instruments Incorporated Layered celp system and method with varying perceptual filter or short-term postfilter strengths
US6996522B2 (en) * 2001-03-13 2006-02-07 Industrial Technology Research Institute Celp-Based speech coding for fine grain scalability by altering sub-frame pitch-pulse
JP2003058195A (ja) * 2001-08-21 2003-02-28 Canon Inc 再生装置、再生システム、再生方法、記憶媒体、及びプログラム
US7062429B2 (en) * 2001-09-07 2006-06-13 Agere Systems Inc. Distortion-based method and apparatus for buffer control in a communication system
WO2003038812A1 (en) * 2001-11-02 2003-05-08 Matsushita Electric Industrial Co., Ltd. Audio encoding and decoding device
WO2003077235A1 (en) * 2002-03-12 2003-09-18 Nokia Corporation Efficient improvements in scalable audio coding
JP3881946B2 (ja) * 2002-09-12 2007-02-14 松下電器産業株式会社 音響符号化装置及び音響符号化方法
US20030231799A1 (en) * 2002-06-14 2003-12-18 Craig Schmidt Lossless data compression using constraint propagation
US7191136B2 (en) * 2002-10-01 2007-03-13 Ibiquity Digital Corporation Efficient coding of high frequency signal information in a signal using a linear/non-linear prediction model based on a low pass baseband
US7299174B2 (en) * 2003-04-30 2007-11-20 Matsushita Electric Industrial Co., Ltd. Speech coding apparatus including enhancement layer performing long term prediction
US7349842B2 (en) * 2003-09-29 2008-03-25 Sony Corporation Rate-distortion control scheme in audio encoding
US7447317B2 (en) * 2003-10-02 2008-11-04 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V Compatible multi-channel coding/decoding by weighting the downmix channel
US7394903B2 (en) * 2004-01-20 2008-07-01 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Apparatus and method for constructing a multi-channel output signal or for generating a downmix signal
JP4461144B2 (ja) * 2004-08-19 2010-05-12 日本電信電話株式会社 多チャネル信号符号化方法、その復号化方法、これらの装置、プログラム及びその記録媒体
ATE440361T1 (de) * 2004-09-30 2009-09-15 Panasonic Corp Einrichtung für skalierbare codierung, einrichtung für skalierbare decodierung und verfahren dafür
EP1847022B1 (en) * 2005-01-11 2010-09-01 Agency for Science, Technology and Research Encoder, decoder, method for encoding/decoding, computer readable media and computer program elements
EP1852850A4 (en) * 2005-02-01 2011-02-16 Panasonic Corp SCALABLE CODING DEVICE AND SCALABLE CODING METHOD
EP1866913B1 (en) * 2005-03-30 2008-08-27 Koninklijke Philips Electronics N.V. Audio encoding and decoding

Also Published As

Publication number Publication date
CN101027718A (zh) 2007-08-29
JPWO2006035705A1 (ja) 2008-05-15
US20080255832A1 (en) 2008-10-16
EP1801782A4 (en) 2008-09-24
WO2006035705A1 (ja) 2006-04-06
EP1801782A1 (en) 2007-06-27
KR20070061843A (ko) 2007-06-14
JP4555299B2 (ja) 2010-09-29

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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]