DE602008005593D1 - Kodierung digitaler audiosignale - Google Patents

Kodierung digitaler audiosignale

Info

Publication number
DE602008005593D1
DE602008005593D1 DE602008005593T DE602008005593T DE602008005593D1 DE 602008005593 D1 DE602008005593 D1 DE 602008005593D1 DE 602008005593 T DE602008005593 T DE 602008005593T DE 602008005593 T DE602008005593 T DE 602008005593T DE 602008005593 D1 DE602008005593 D1 DE 602008005593D1
Authority
DE
Germany
Prior art keywords
quantification
module
signal
indexes
encoder
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DE602008005593T
Other languages
English (en)
Inventor
Balazs Kovesi
Guyader Alain Le
Stephane Ragot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orange SA
Original Assignee
France Telecom SA
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 France Telecom SA filed Critical France Telecom SA
Publication of DE602008005593D1 publication Critical patent/DE602008005593D1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B14/00—Transmission systems not characterised by the medium used for transmission
    • H04B14/02—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation
    • H04B14/04—Transmission systems not characterised by the medium used for transmission characterised by the use of pulse modulation using pulse code modulation
    • 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
    • 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
    • G10L19/26—Pre-filtering or post-filtering
    • G10L19/265—Pre-filtering, e.g. high frequency emphasis prior to encoding
    • 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)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Human Computer Interaction (AREA)
  • Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Dental Preparations (AREA)
DE602008005593T 2007-06-15 2008-06-13 Kodierung digitaler audiosignale Active DE602008005593D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0755792 2007-06-15
PCT/FR2008/051059 WO2009004227A1 (fr) 2007-06-15 2008-06-13 Codage de signaux audionumériques

Publications (1)

Publication Number Publication Date
DE602008005593D1 true DE602008005593D1 (de) 2011-04-28

Family

ID=38577930

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602008005593T Active DE602008005593D1 (de) 2007-06-15 2008-06-13 Kodierung digitaler audiosignale

Country Status (9)

Country Link
US (1) US8719012B2 (de)
EP (1) EP2171713B1 (de)
JP (1) JP5451603B2 (de)
AT (1) ATE502377T1 (de)
BR (1) BRPI0813178B1 (de)
DE (1) DE602008005593D1 (de)
ES (1) ES2363190T3 (de)
PL (1) PL2171713T3 (de)
WO (1) WO2009004227A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2938688A1 (fr) * 2008-11-18 2010-05-21 France Telecom Codage avec mise en forme du bruit dans un codeur hierarchique
FR2969360A1 (fr) * 2010-12-16 2012-06-22 France Telecom Codage perfectionne d'un etage d'amelioration dans un codeur hierarchique
ES2911527T3 (es) 2014-05-01 2022-05-19 Nippon Telegraph & Telephone Dispositivo de descodificación de señales de sonido, método de descodificación de señales de sonido, programa y soporte de registro

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE68927483T2 (de) * 1988-02-29 1997-04-03 Sony Corp Verfahren und Einrichtung zur Digitalsignalverarbeitung
JP2551147B2 (ja) * 1989-05-19 1996-11-06 国際電信電話株式会社 音声符号化方式
JPH03181232A (ja) * 1989-12-11 1991-08-07 Toshiba Corp 可変レート符号化方式
JPH0472909A (ja) 1990-07-13 1992-03-06 Sony Corp オーディオ信号の量子化誤差低減装置
EP0632597B1 (de) * 1993-06-29 2002-08-28 Sony Corporation Gerät und Verfahren zur Tonsignalübertragung
US5651090A (en) * 1994-05-06 1997-07-22 Nippon Telegraph And Telephone Corporation Coding method and coder for coding input signals of plural channels using vector quantization, and decoding method and decoder therefor
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
US6496798B1 (en) * 1999-09-30 2002-12-17 Motorola, Inc. Method and apparatus for encoding and decoding frames of voice model parameters into a low bit rate digital voice message
JP3559488B2 (ja) * 2000-02-16 2004-09-02 日本電信電話株式会社 音響信号の階層符号化方法及び復号化方法
US6584438B1 (en) * 2000-04-24 2003-06-24 Qualcomm Incorporated Frame erasure compensation method in a variable rate speech coder
FR2859566B1 (fr) * 2003-09-05 2010-11-05 Eads Telecom Procede de transmission d'un flux d'information par insertion a l'interieur d'un flux de donnees de parole, et codec parametrique pour sa mise en oeuvre
US7930176B2 (en) * 2005-05-20 2011-04-19 Broadcom Corporation Packet loss concealment for block-independent speech codecs
RU2439721C2 (ru) * 2007-06-11 2012-01-10 Фраунхофер-Гезелльшафт цур Фёрдерунг дер ангевандтен Аудиокодер для кодирования аудиосигнала, имеющего импульсоподобную и стационарную составляющие, способы кодирования, декодер, способ декодирования и кодированный аудиосигнал

Also Published As

Publication number Publication date
PL2171713T3 (pl) 2011-08-31
BRPI0813178B1 (pt) 2020-05-12
JP5451603B2 (ja) 2014-03-26
ES2363190T3 (es) 2011-07-26
WO2009004227A1 (fr) 2009-01-08
EP2171713B1 (de) 2011-03-16
ATE502377T1 (de) 2011-04-15
EP2171713A1 (de) 2010-04-07
JP2010532489A (ja) 2010-10-07
BRPI0813178A2 (pt) 2014-12-23
US20100145712A1 (en) 2010-06-10
US8719012B2 (en) 2014-05-06

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DE602008005593D1 (de) Kodierung digitaler audiosignale