BRPI0519454A2 - aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel - Google Patents

aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel

Info

Publication number
BRPI0519454A2
BRPI0519454A2 BRPI0519454-7A BRPI0519454A BRPI0519454A2 BR PI0519454 A2 BRPI0519454 A2 BR PI0519454A2 BR PI0519454 A BRPI0519454 A BR PI0519454A BR PI0519454 A2 BRPI0519454 A2 BR PI0519454A2
Authority
BR
Brazil
Prior art keywords
signal
rescalable
channel
coding
sound source
Prior art date
Application number
BRPI0519454-7A
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 BRPI0519454A2 publication Critical patent/BRPI0519454A2/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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • 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)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Physics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

APARELHO DE CODIFICAÇçO REESCALONÁVEL E MÉTODO DE CODIFICAÇçO REESCALONÁVEL. A presente invenção refere-se a um aparelho de codificação reescalonável em que a degradação da qualidade de som de um sinal decodi ficado pode ser evitada, enquanto a taxa de codificação e a escala do circuito podem ser reduzidas. Neste aparelho, uma parte de processamento de sinal de canal-L (105-1) usa a informação de espaço de canal-L para gerar um sinal de canal-L (L1) para produzir um sinal processado (L2) que é similar a um sinal monofônico (M1). Uma parte de combinação de sinal processado de canal-L (106-1) usa o sinal processado (L2) e um sinal de fonte de som (S1) gerado por uma parte de geração de sinal de fonte de som (104) para gerar um sinal combinado (L3). Uma parte de processamento de sinal de canal-R (105-2) e uma parte de combinação de sinal processado de canal-R (106-2) operam de modo similar. Uma parte de minimização de distorção (103) controla a parte de geração de sinal de fonte de som (104) para gerar tal sinal de fonte de som comum (S1) que a soma das distorções de codificação de sinais combinados (M2, L3, R3) é minimizada.
BRPI0519454-7A 2004-12-28 2005-12-26 aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel BRPI0519454A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2004381492 2004-12-28
JP2005160187 2005-05-31
PCT/JP2005/023812 WO2006070760A1 (ja) 2004-12-28 2005-12-26 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
BRPI0519454A2 true BRPI0519454A2 (pt) 2009-01-27

Family

ID=36614877

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0519454-7A BRPI0519454A2 (pt) 2004-12-28 2005-12-26 aparelho de codificaÇço reescalonÁvel e mÉtodo de codificaÇço reescalonÁvel

Country Status (6)

Country Link
US (1) US20080162148A1 (pt)
EP (1) EP1818910A4 (pt)
JP (1) JP4842147B2 (pt)
KR (1) KR20070090217A (pt)
BR (1) BRPI0519454A2 (pt)
WO (1) WO2006070760A1 (pt)

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US20090055169A1 (en) * 2005-01-26 2009-02-26 Matsushita Electric Industrial Co., Ltd. Voice encoding device, and voice encoding method
EP1959431B1 (en) * 2005-11-30 2010-06-23 Panasonic Corporation Scalable coding apparatus and scalable coding method
JPWO2008016098A1 (ja) * 2006-08-04 2009-12-24 パナソニック株式会社 ステレオ音声符号化装置、ステレオ音声復号装置およびこれらの方法
JP4871894B2 (ja) * 2007-03-02 2012-02-08 パナソニック株式会社 符号化装置、復号装置、符号化方法および復号方法
KR101398836B1 (ko) * 2007-08-02 2014-05-26 삼성전자주식회사 스피치 코덱들의 고정 코드북들을 공통 모듈로 구현하는방법 및 장치
CN101842832B (zh) * 2007-10-31 2012-11-07 松下电器产业株式会社 编码装置和解码装置
US8235897B2 (en) 2010-04-27 2012-08-07 A.D. Integrity Applications Ltd. Device for non-invasively measuring glucose
US12002476B2 (en) 2010-07-19 2024-06-04 Dolby International Ab Processing of audio signals during high frequency reconstruction
CN103155559B (zh) * 2010-10-12 2016-01-06 杜比实验室特许公司 用于帧兼容视频传输的联合层优化

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Publication number Priority date Publication date Assignee Title
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
DE19742655C2 (de) * 1997-09-26 1999-08-05 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Codieren eines zeitdiskreten Stereosignals
DE19959156C2 (de) * 1999-12-08 2002-01-31 Fraunhofer Ges Forschung Verfahren und Vorrichtung zum Verarbeiten eines zu codierenden Stereoaudiosignals
SE519985C2 (sv) * 2000-09-15 2003-05-06 Ericsson Telefon Ab L M Kodning och avkodning av signaler från flera kanaler
US6614365B2 (en) * 2000-12-14 2003-09-02 Sony Corporation Coding device and method, decoding device and method, and recording medium
JP3951690B2 (ja) * 2000-12-14 2007-08-01 ソニー株式会社 符号化装置および方法、並びに記録媒体
SE0202159D0 (sv) * 2001-07-10 2002-07-09 Coding Technologies Sweden Ab Efficientand scalable parametric stereo coding for low bitrate applications
KR101021079B1 (ko) * 2002-04-22 2011-03-14 코닌클리케 필립스 일렉트로닉스 엔.브이. 파라메트릭 다채널 오디오 표현
JP4714416B2 (ja) * 2002-04-22 2011-06-29 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 空間的オーディオのパラメータ表示
US7725324B2 (en) * 2003-12-19 2010-05-25 Telefonaktiebolaget Lm Ericsson (Publ) Constrained filter encoding of polyphonic signals
BRPI0418665B1 (pt) * 2004-03-12 2018-08-28 Nokia Corp método e decodificador para sintetizar um sinal de áudio mono baseado no sinal de áudio codificado de múltiplos canais disponíveis, terminal móvel e sistema de codificação
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US7904292B2 (en) * 2004-09-30 2011-03-08 Panasonic Corporation Scalable encoding device, scalable decoding device, and method thereof
SE0402650D0 (sv) * 2004-11-02 2004-11-02 Coding Tech Ab Improved parametric stereo compatible coding of spatial audio
CN101111887B (zh) * 2005-02-01 2011-06-29 松下电器产业株式会社 可扩展编码装置和可扩展编码方法
US8000967B2 (en) * 2005-03-09 2011-08-16 Telefonaktiebolaget Lm Ericsson (Publ) Low-complexity code excited linear prediction encoding

Also Published As

Publication number Publication date
WO2006070760A1 (ja) 2006-07-06
EP1818910A1 (en) 2007-08-15
US20080162148A1 (en) 2008-07-03
JPWO2006070760A1 (ja) 2008-06-12
KR20070090217A (ko) 2007-09-05
JP4842147B2 (ja) 2011-12-21
EP1818910A4 (en) 2009-11-25

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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]
B15K Others concerning applications: alteration of classification

Ipc: G10L 19/008 (2013.01), G10L 19/24 (2013.01)