BRPI0507124A - aparelho e método para escalonamento de tempo de um sinal, programa de computador, e, portador de gravação - Google Patents

aparelho e método para escalonamento de tempo de um sinal, programa de computador, e, portador de gravação

Info

Publication number
BRPI0507124A
BRPI0507124A BRPI0507124-0A BRPI0507124A BRPI0507124A BR PI0507124 A BRPI0507124 A BR PI0507124A BR PI0507124 A BRPI0507124 A BR PI0507124A BR PI0507124 A BRPI0507124 A BR PI0507124A
Authority
BR
Brazil
Prior art keywords
time
signal
stereo
frequency
processor
Prior art date
Application number
BRPI0507124-0A
Other languages
English (en)
Inventor
Erik G P Schuijers
Andreas J Gerrits
Arnoldus W J Oomen
Original Assignee
Koninkl Philips Electronics Nv
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 Koninkl Philips Electronics Nv filed Critical Koninkl Philips Electronics Nv
Publication of BRPI0507124A publication Critical patent/BRPI0507124A/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
    • 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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Mathematical Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Communication Control (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Television Systems (AREA)

Abstract

APARELHO E MéTODO PARA ESCALONAMENTO DE TEMPO DE UM SINAL, PROGRAMA DE COMPUTADOR, E, PORTADOR DE GRAVAçãO Um decodificador recebe (501) um fluxo de bits compreendendo um sinal mono codificado e dados estéreo. Um processador de escala de tempo (503) gera um sinal mono escalonado no tempo. Um processador de tempo para freqüência gera blocos de amostras de freqüência do sinal escalonado no tempo, a extensão de bloco sendo fixa e independente do escalonamento de tempo. Um decodificador estéreo paramétrico (509) gera um sinal estéreo para os blocos de amostras de freqüência e estes são convertidos para o domínio do tempo por um processador de freqüência para tempo (511). Um processador de sincronização (515) sincroniza os dados estéreo com sinal escalonado no tempo, determinando uma associação de tempo entre um valor de parâmetro e um bloco de amostra de freqüência. O valor de parâmetro e associação de tempo são usados para determinar valores de parâmetro estéreo sincronizado para aquele e outros blocos de amostras de freqüência. A invenção é particularmente adequada para geração de baixa complexidade de sinais estéreo escalonados no tempo a partir de sinais codificados MPEG-4.
BRPI0507124-0A 2004-01-28 2005-01-14 aparelho e método para escalonamento de tempo de um sinal, programa de computador, e, portador de gravação BRPI0507124A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04100306 2004-01-28
PCT/IB2005/050159 WO2005073958A1 (en) 2004-01-28 2005-01-14 Method and apparatus for time scaling of a signal

Publications (1)

Publication Number Publication Date
BRPI0507124A true BRPI0507124A (pt) 2007-06-19

Family

ID=34814365

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0507124-0A BRPI0507124A (pt) 2004-01-28 2005-01-14 aparelho e método para escalonamento de tempo de um sinal, programa de computador, e, portador de gravação

Country Status (11)

Country Link
US (1) US7734473B2 (pt)
EP (1) EP1711937B1 (pt)
JP (1) JP2007519967A (pt)
KR (1) KR20070001111A (pt)
CN (1) CN1914668B (pt)
AT (1) ATE447226T1 (pt)
BR (1) BRPI0507124A (pt)
DE (1) DE602005017358D1 (pt)
ES (1) ES2335221T3 (pt)
RU (1) RU2381569C2 (pt)
WO (1) WO2005073958A1 (pt)

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US9159333B2 (en) * 2006-06-21 2015-10-13 Samsung Electronics Co., Ltd. Method and apparatus for adaptively encoding and decoding high frequency band
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US8571875B2 (en) * 2006-10-18 2013-10-29 Samsung Electronics Co., Ltd. Method, medium, and apparatus encoding and/or decoding multichannel audio signals
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KR20080073925A (ko) * 2007-02-07 2008-08-12 삼성전자주식회사 파라메트릭 부호화된 오디오 신호를 복호화하는 방법 및장치
US8401865B2 (en) 2007-07-18 2013-03-19 Nokia Corporation Flexible parameter update in audio/speech coded signals
EP2650877B1 (en) * 2008-10-06 2016-04-06 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for delivery of aligned multi-channel audio
CN103474076B (zh) * 2008-10-06 2017-04-12 爱立信电话股份有限公司 用于输送对齐的多通道音频的方法和设备
EP2214161A1 (en) * 2009-01-28 2010-08-04 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Apparatus, method and computer program for upmixing a downmix audio signal
TWI618350B (zh) 2009-02-18 2018-03-11 杜比國際公司 用於高頻重建或參數立體聲之複指數調變濾波器組
TWI516138B (zh) * 2010-08-24 2016-01-01 杜比國際公司 從二聲道音頻訊號決定參數式立體聲參數之系統與方法及其電腦程式產品
ES2526320T3 (es) * 2010-08-24 2015-01-09 Dolby International Ab Ocultamiento de la recepción mono intermitente de receptores de radio estéreo de FM
EP2710592B1 (en) * 2011-07-15 2017-11-22 Huawei Technologies Co., Ltd. Method and apparatus for processing a multi-channel audio signal
IN2015DN04001A (pt) * 2012-11-07 2015-10-02 Dolby Int Ab
US20160064004A1 (en) * 2013-04-15 2016-03-03 Nokia Technologies Oy Multiple channel audio signal encoder mode determiner
US9686609B1 (en) * 2013-06-28 2017-06-20 Avnera Corporation Low power synchronous data interface
CN104347077B (zh) * 2014-10-23 2018-01-16 清华大学 一种立体声编解码方法
JP6763194B2 (ja) * 2016-05-10 2020-09-30 株式会社Ｊｖｃケンウッド 符号化装置、復号装置、通信システム
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WO2024208420A1 (en) * 2023-04-05 2024-10-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio processor, audio processing system, audio decoder, method for providing a processed audio signal representation and computer program using a time scale modification

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Also Published As

Publication number Publication date
EP1711937A1 (en) 2006-10-18
ATE447226T1 (de) 2009-11-15
ES2335221T3 (es) 2010-03-23
CN1914668A (zh) 2007-02-14
US7734473B2 (en) 2010-06-08
RU2381569C2 (ru) 2010-02-10
CN1914668B (zh) 2010-06-16
WO2005073958A1 (en) 2005-08-11
JP2007519967A (ja) 2007-07-19
EP1711937B1 (en) 2009-10-28
KR20070001111A (ko) 2007-01-03
DE602005017358D1 (de) 2009-12-10
US20090192804A1 (en) 2009-07-30
RU2006127273A (ru) 2008-02-10

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE AO NAO RECOLHIMENTO DA 8A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2204 DE 02/04/2013.