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

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE388599T1 (de) * 2004-04-16 2008-03-15 Dublin Inst Of Technology Verfahren und system zur schallquellen-trennung
FR2888699A1 (fr) * 2005-07-13 2007-01-19 France Telecom Dispositif de codage/decodage hierachique
US9159333B2 (en) * 2006-06-21 2015-10-13 Samsung Electronics Co., Ltd. Method and apparatus for adaptively encoding and decoding high frequency band
ATE520120T1 (de) * 2006-06-29 2011-08-15 Nxp Bv Klangrahmenlängenanpassung
US8571875B2 (en) * 2006-10-18 2013-10-29 Samsung Electronics Co., Ltd. Method, medium, and apparatus encoding and/or decoding multichannel audio signals
KR101434198B1 (ko) * 2006-11-17 2014-08-26 삼성전자주식회사 신호 복호화 방법
JP5103880B2 (ja) * 2006-11-24 2012-12-19 富士通株式会社 復号化装置および復号化方法
US8553891B2 (en) * 2007-02-06 2013-10-08 Koninklijke Philips N.V. Low complexity parametric stereo decoder
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
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
EP2650877B1 (en) * 2008-10-06 2016-04-06 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for delivery of aligned multi-channel audio
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
TWI618351B (zh) 2009-02-18 2018-03-11 杜比國際公司 用於高頻重建之複指數調變濾波器組
EP2609592B1 (en) * 2010-08-24 2014-11-05 Dolby International AB Concealment of intermittent mono reception of fm stereo radio receivers
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
WO2012167479A1 (en) * 2011-07-15 2012-12-13 Huawei Technologies Co., Ltd. Method and apparatus for processing a multi-channel audio signal
KR101726205B1 (ko) * 2012-11-07 2017-04-12 돌비 인터네셔널 에이비 감소된 복잡성 변환기 ｓｎｒ 계산
WO2014170530A1 (en) * 2013-04-15 2014-10-23 Nokia Corporation 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
US10210874B2 (en) * 2017-02-03 2019-02-19 Qualcomm Incorporated Multi channel coding
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

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5175769A (en) * 1991-07-23 1992-12-29 Rolm Systems Method for time-scale modification of signals
JP3509862B2 (ja) * 1993-05-05 2004-03-22 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴイ 少なくとも１個のコーダを有する伝送システム
FR2741215B1 (fr) * 1995-11-14 1998-01-23 Matra Communication Procede de transmission d'une sequence de bits d'information avec protection selective contre les erreurs de transmission, procedes de codage et de correction pouvant etre mis en oeuvre dans un tel procede de transmission
US5828994A (en) * 1996-06-05 1998-10-27 Interval Research Corporation Non-uniform time scale modification of recorded audio
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
JP3465628B2 (ja) * 1999-05-06 2003-11-10 ヤマハ株式会社 オーディオ信号の時間軸圧伸方法及び装置
JP3430968B2 (ja) * 1999-05-06 2003-07-28 ヤマハ株式会社 ディジタル信号の時間軸圧伸方法及び装置
US6278387B1 (en) * 1999-09-28 2001-08-21 Conexant Systems, Inc. Audio encoder and decoder utilizing time scaling for variable playback
US6842735B1 (en) * 1999-12-17 2005-01-11 Interval Research Corporation Time-scale modification of data-compressed audio information
JP2001255894A (ja) * 2000-03-13 2001-09-21 Sony Corp 再生速度変換装置及び方法
JP2002268700A (ja) * 2001-03-09 2002-09-20 Canon Inc 音響情報符号化装置及び復号装置及び方法及びコンピュータプログラム及び記憶媒体
US7610205B2 (en) * 2002-02-12 2009-10-27 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
WO2003046889A1 (en) * 2001-11-30 2003-06-05 Koninklijke Philips Electronics N.V. Signal coding
US7079905B2 (en) * 2001-12-05 2006-07-18 Ssi Corporation Time scaling of stereo audio
US7239999B2 (en) * 2002-07-23 2007-07-03 Intel Corporation Speed control playback of parametric speech encoded digital audio
US6982377B2 (en) * 2003-12-18 2006-01-03 Texas Instruments Incorporated Time-scale modification of music signals based on polyphase filterbanks and constrained time-domain processing

Also Published As

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

Similar Documents

Publication Publication Date Title
ATE447226T1 (de) Verfahren und vorrichtung zur zeitskalierung eines signals
KR101049751B1 (ko) 오디오 코딩
US10311881B2 (en) Determining the inter-channel time difference of a multi-channel audio signal
JP6262668B2 (ja) 帯域幅拡張パラメータ生成装置、符号化装置、復号装置、帯域幅拡張パラメータ生成方法、符号化方法、および、復号方法
JP5394931B2 (ja) オブジェクトベースオーディオ信号の復号化方法及びその装置
CN103403800B (zh) 确定多声道音频信号的声道间时间差
SE0400998D0 (sv) Method for representing multi-channel audio signals
ES2673319T3 (es) Control de coherencia de fase para señales armónicas en códecs de audio perceptual
EP1523863A1 (en) Audio coding
TW200701821A (en) Apparatus and method for generating multi-channel synthesizer control signal and apparatus and method for multi-channel synthesizing
JP4834539B2 (ja) オーディオ信号合成
ATE502376T1 (de) Synthese verlorener blöcke eines digitalen audiosignals
ATE447227T1 (de) Linear-prädiktive codierung eines audiosignals
CN101188112B (zh) 解码装置和解码方法
BRPI0410856B1 (pt) Métodos de codificar e de decodificar sinais multicanais, aparelho codificador, e, aparelho decodificador
JP4313993B2 (ja) オーディオ復号化装置およびオーディオ復号化方法
KR20070037985A (ko) 다채널 오디오 신호의 디코딩 방법 및 그 장치
JP2002076904A (ja) 符号化されたオーディオ信号の復号化方法、及び符号化されたオーディオ信号の復号化装置
KR100891670B1 (ko) 신호 처리 방법 및 장치
Gunnarsson et al. Music signal synthesis using sinusoid models and sliding-window ESPRIT
Brandenburg Parametric Coding of High-Quality Audio
RU2009123986A (ru) Способ и устройство для кодирования и декодирования основывающегося на объектах аудиосигнала
WO2010058931A3 (en) A method and an apparatus for processing a signal

Legal Events

Date Code Title Description
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.