CA2482427A1 - Dispositif et procede pour coder un signal audio a temps discret et dispositif et procede pour decoder des donnees audio codees - Google Patents

Dispositif et procede pour coder un signal audio a temps discret et dispositif et procede pour decoder des donnees audio codees Download PDF

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Publication number
CA2482427A1
CA2482427A1 CA002482427A CA2482427A CA2482427A1 CA 2482427 A1 CA2482427 A1 CA 2482427A1 CA 002482427 A CA002482427 A CA 002482427A CA 2482427 A CA2482427 A CA 2482427A CA 2482427 A1 CA2482427 A1 CA 2482427A1
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Prior art keywords
block
integer
difference
spectral values
quantization
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CA002482427A
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English (en)
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CA2482427C (fr
Inventor
Ralf Geiger
Thomas Sporer
Karlheinz Brandenburg
Jurgen Herre
Jurgen Koller
Joachim Deguara
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Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • 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
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/032—Quantisation or dequantisation of spectral components

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

Selon la présente invention, un signal audio à temps discret est traité (52) afin de fournir (52) un bloc de quantification avec des valeurs spectrales quantifiées. Une représentation spectrale en nombres entiers est produite à partir du signal audio à temps discret, par utilisation d'un algorithme de transformation (56) en nombres entiers. Le bloc de quantification qui a été produit à l'aide d'un modèle psychoacoustique (54) est inversement quantifié et arrondi (58) afin d'établir une différence entre les valeurs spectrales en nombres entiers et les valeurs spectrales arrondies inversement quantifiées. Le bloc de quantification seul fournit, après le décodage, un signal audio à codage/décodage psychoacoustique avec pertes, alors que le bloc de quantification avec le bloc de combinaison fournit, lors du décodage, un signal audio codé ou à nouveau décodé, sans perte ou quasiment sans perte. La production du signal différentiel dans le domaine fréquentiel permet d'obtenir une structure de codeur/décodeur simplifiée.
CA002482427A 2002-04-18 2002-12-02 Dispositif et procede pour coder un signal audio a temps discret et dispositif et procede pour decoder des donnees audio codees Expired - Lifetime CA2482427C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10217297A DE10217297A1 (de) 2002-04-18 2002-04-18 Vorrichtung und Verfahren zum Codieren eines zeitdiskreten Audiosignals und Vorrichtung und Verfahren zum Decodieren von codierten Audiodaten
DE10217297.8 2002-04-18
PCT/EP2002/013623 WO2003088212A1 (fr) 2002-04-18 2002-12-02 Dispositif et procede pour coder un signal audio a temps discret et dispositif et procede pour decoder des donnees audio codees

Publications (2)

Publication Number Publication Date
CA2482427A1 true CA2482427A1 (fr) 2003-10-23
CA2482427C CA2482427C (fr) 2010-01-19

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CA002482427A Expired - Lifetime CA2482427C (fr) 2002-04-18 2002-12-02 Dispositif et procede pour coder un signal audio a temps discret et dispositif et procede pour decoder des donnees audio codees

Country Status (9)

Country Link
EP (1) EP1495464B1 (fr)
JP (1) JP4081447B2 (fr)
KR (1) KR100892152B1 (fr)
CN (1) CN1258172C (fr)
AT (1) ATE305655T1 (fr)
CA (1) CA2482427C (fr)
DE (2) DE10217297A1 (fr)
HK (1) HK1077391A1 (fr)
WO (1) WO2003088212A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9093065B2 (en) 2006-09-20 2015-07-28 Thomson Licensing Method and device for transcoding audio signals exclduing transformation coefficients below −60 decibels
US9099079B2 (en) 2007-01-22 2015-08-04 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Device and method for generating and decoding a side channel signal transmitted with a main channel signal
US10242682B2 (en) 2013-07-22 2019-03-26 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Frequency-domain audio coding supporting transform length switching
CN112105902A (zh) * 2018-04-11 2020-12-18 杜比实验室特许公司 基于机器学习的用于音频编码和解码的基于感知的损失函数

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US20070276894A1 (en) * 2003-09-29 2007-11-29 Agency For Science, Technology And Research Process And Device For Determining A Transforming Element For A Given Transformation Function, Method And Device For Transforming A Digital Signal From The Time Domain Into The Frequency Domain And Vice Versa And Computer Readable Medium
ATE391988T1 (de) * 2003-10-10 2008-04-15 Agency Science Tech & Res Verfahren zum codieren eines digitalen signals in einen skalierbaren bitstrom, verfahren zum decodieren eines skalierbaren bitstroms
DE102004007184B3 (de) * 2004-02-13 2005-09-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zum Quantisieren eines Informationssignals
DE102004007200B3 (de) * 2004-02-13 2005-08-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audiocodierung
DE102004059979B4 (de) 2004-12-13 2007-11-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Berechnung einer Signalenergie eines Informationssignals
US8082157B2 (en) 2005-06-30 2011-12-20 Lg Electronics Inc. Apparatus for encoding and decoding audio signal and method thereof
EP1938663A4 (fr) 2005-08-30 2010-11-17 Lg Electronics Inc Dispositif pour coder et decoder un signal audio et procede correspondant
KR100857120B1 (ko) 2005-10-05 2008-09-05 엘지전자 주식회사 신호 처리 방법 및 이의 장치, 그리고 인코딩 및 디코딩방법 및 이의 장치
US20070092086A1 (en) 2005-10-24 2007-04-26 Pang Hee S Removing time delays in signal paths
EP1852849A1 (fr) * 2006-05-05 2007-11-07 Deutsche Thomson-Brandt Gmbh Procédé et appareil d'encodage sans perte d'un signal source utilisant un courant de données encodées avec perte et un courant d'extension de données encodées sans perte
EP1883067A1 (fr) * 2006-07-24 2008-01-30 Deutsche Thomson-Brandt Gmbh Méthode et appareil pour l'encodage sans perte d'un signal source, utilisant un flux de données encodées avec pertes et un flux de données d'extension sans perte.
DE102006051673A1 (de) * 2006-11-02 2008-05-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Nachbearbeiten von Spektralwerten und Encodierer und Decodierer für Audiosignale
KR101149448B1 (ko) 2007-02-12 2012-05-25 삼성전자주식회사 오디오 부호화 및 복호화 장치와 그 방법
EP2015293A1 (fr) * 2007-06-14 2009-01-14 Deutsche Thomson OHG Procédé et appareil pour coder et décoder un signal audio par résolution temporelle à commutation adaptative dans le domaine spectral
CA2698039C (fr) * 2007-08-27 2016-05-17 Telefonaktiebolaget Lm Ericsson (Publ) Analyse/synthese spectrale de faible complexite faisant appel a une resolution temporelle selectionnable
EP2063417A1 (fr) * 2007-11-23 2009-05-27 Deutsche Thomson OHG Formage de l'erreur d'arrondi pour le codage et décodage basés sur des transformées entières
EP2144230A1 (fr) 2008-07-11 2010-01-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Schéma de codage/décodage audio à taux bas de bits disposant des commutateurs en cascade
WO2010040522A2 (fr) * 2008-10-08 2010-04-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. Schéma de codage/décodage audio commuté à résolution multiple
WO2011122875A2 (fr) * 2010-03-31 2011-10-06 한국전자통신연구원 Procédé et dispositif de codage, et procédé et dispositif de décodage
US8924222B2 (en) 2010-07-30 2014-12-30 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for coding of harmonic signals
US9208792B2 (en) 2010-08-17 2015-12-08 Qualcomm Incorporated Systems, methods, apparatus, and computer-readable media for noise injection
JP5799707B2 (ja) * 2011-09-26 2015-10-28 ソニー株式会社 オーディオ符号化装置およびオーディオ符号化方法、オーディオ復号装置およびオーディオ復号方法、並びにプログラム
CN105632503B (zh) * 2014-10-28 2019-09-03 南宁富桂精密工业有限公司 信息隐藏方法及系统
US10354667B2 (en) 2017-03-22 2019-07-16 Immersion Networks, Inc. System and method for processing audio data
EP3471271A1 (fr) * 2017-10-16 2019-04-17 Acoustical Beauty Convolutions améliorées de signaux numériques utilisant une optimisation des exigences de bits d'un signal numérique cible
WO2019091576A1 (fr) * 2017-11-10 2019-05-16 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Codeurs audio, décodeurs audio, procédés et programmes informatiques adaptant un codage et un décodage de bits les moins significatifs
CN107911122A (zh) * 2017-11-13 2018-04-13 南京大学 基于分解压缩的分布式光纤振动传感数据无损压缩方法
US11281312B2 (en) 2018-01-08 2022-03-22 Immersion Networks, Inc. Methods and apparatuses for producing smooth representations of input motion in time and space
DE102019204527B4 (de) * 2019-03-29 2020-11-19 Technische Universität München Kodierungs-/dekodierungsvorrichtungen und verfahren zur kodierung/dekodierung von vibrotaktilen signalen
KR102250835B1 (ko) * 2019-08-05 2021-05-11 국방과학연구소 수동 소나의 협대역 신호를 탐지하기 위한 lofar 또는 demon 그램의 압축 장치

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9093065B2 (en) 2006-09-20 2015-07-28 Thomson Licensing Method and device for transcoding audio signals exclduing transformation coefficients below −60 decibels
US9099079B2 (en) 2007-01-22 2015-08-04 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Device and method for generating and decoding a side channel signal transmitted with a main channel signal
US9659566B2 (en) 2007-01-22 2017-05-23 Faunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Device and method for generating and decoding a side channel signal transmitted with a main channel signal
US10242682B2 (en) 2013-07-22 2019-03-26 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Frequency-domain audio coding supporting transform length switching
US10984809B2 (en) 2013-07-22 2021-04-20 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Frequency-domain audio coding supporting transform length switching
CN112105902A (zh) * 2018-04-11 2020-12-18 杜比实验室特许公司 基于机器学习的用于音频编码和解码的基于感知的损失函数
CN112105902B (zh) * 2018-04-11 2022-07-22 杜比实验室特许公司 基于机器学习的用于音频编码和解码的基于感知的损失函数

Also Published As

Publication number Publication date
EP1495464A1 (fr) 2005-01-12
CN1625768A (zh) 2005-06-08
DE50204426D1 (de) 2005-11-03
DE10217297A1 (de) 2003-11-06
EP1495464B1 (fr) 2005-09-28
JP2005527851A (ja) 2005-09-15
ATE305655T1 (de) 2005-10-15
WO2003088212A1 (fr) 2003-10-23
CN1258172C (zh) 2006-05-31
KR20050007312A (ko) 2005-01-17
JP4081447B2 (ja) 2008-04-23
KR100892152B1 (ko) 2009-04-10
CA2482427C (fr) 2010-01-19
HK1077391A1 (en) 2006-02-10
AU2002358578A1 (en) 2003-10-27

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