DE69017074D1 - Verfahren und Einrichtung zur Codierung von Audio-Signalen. - Google Patents

Verfahren und Einrichtung zur Codierung von Audio-Signalen.

Info

Publication number
DE69017074D1
DE69017074D1 DE69017074T DE69017074T DE69017074D1 DE 69017074 D1 DE69017074 D1 DE 69017074D1 DE 69017074 T DE69017074 T DE 69017074T DE 69017074 T DE69017074 T DE 69017074T DE 69017074 D1 DE69017074 D1 DE 69017074D1
Authority
DE
Germany
Prior art keywords
audio signals
coding audio
coding
signals
audio
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.)
Expired - Lifetime
Application number
DE69017074T
Other languages
English (en)
Other versions
DE69017074T2 (de
Inventor
Yannick Mahieux
Alain Charbonnier
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
Application granted granted Critical
Publication of DE69017074D1 publication Critical patent/DE69017074D1/de
Publication of DE69017074T2 publication Critical patent/DE69017074T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3053—Block-companding PCM systems
DE69017074T 1989-05-11 1990-05-09 Verfahren und Einrichtung zur Codierung von Audio-Signalen. Expired - Lifetime DE69017074T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8906194A FR2646978B1 (fr) 1989-05-11 1989-05-11 Procede et installation a codage de signaux sonores

Publications (2)

Publication Number Publication Date
DE69017074D1 true DE69017074D1 (de) 1995-03-30
DE69017074T2 DE69017074T2 (de) 1995-10-12

Family

ID=9381579

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69017074T Expired - Lifetime DE69017074T2 (de) 1989-05-11 1990-05-09 Verfahren und Einrichtung zur Codierung von Audio-Signalen.

Country Status (5)

Country Link
US (1) US5089818A (de)
EP (1) EP0397564B1 (de)
JP (1) JP3154482B2 (de)
DE (1) DE69017074T2 (de)
FR (1) FR2646978B1 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5448683A (en) * 1991-06-24 1995-09-05 Kokusai Electric Co., Ltd. Speech encoder
JP3144009B2 (ja) * 1991-12-24 2001-03-07 日本電気株式会社 音声符号復号化装置
JP3310682B2 (ja) * 1992-01-21 2002-08-05 日本ビクター株式会社 音響信号の符号化方法及び再生方法
KR960003628B1 (ko) * 1993-12-06 1996-03-20 Lg전자주식회사 디지탈신호의 부호화/복호화 방법 및 장치
JP2655063B2 (ja) * 1993-12-24 1997-09-17 日本電気株式会社 音声符号化装置
FI114248B (fi) * 1997-03-14 2004-09-15 Nokia Corp Menetelmä ja laite audiokoodaukseen ja audiodekoodaukseen
JP3462066B2 (ja) * 1998-01-29 2003-11-05 株式会社東芝 Ａｄｐｃｍ圧縮装置、ａｄｐｃｍ伸長装置及びａｄｐｃｍ圧縮伸長装置
EP1279164A1 (de) 2000-04-28 2003-01-29 Deutsche Telekom AG Verfahren zur berechnung einer sprachaktivitätsentscheidung (voice activity detector)
DE10026904A1 (de) * 2000-04-28 2002-01-03 Deutsche Telekom Ag Verfahren zur Berechnung des die Lautstärke mitbestimmenden Verstärkungsfaktors für ein codiert übertragenes Sprachsignal
US7016547B1 (en) 2002-06-28 2006-03-21 Microsoft Corporation Adaptive entropy encoding/decoding for screen capture content
DE60330198D1 (de) 2002-09-04 2009-12-31 Microsoft Corp Entropische Kodierung mittels Anpassung des Kodierungsmodus zwischen Niveau- und Lauflängenniveau-Modus
US7433824B2 (en) * 2002-09-04 2008-10-07 Microsoft Corporation Entropy coding by adapting coding between level and run-length/level modes
US7724827B2 (en) * 2003-09-07 2010-05-25 Microsoft Corporation Multi-layer run level encoding and decoding
US7688894B2 (en) * 2003-09-07 2010-03-30 Microsoft Corporation Scan patterns for interlaced video content
US7782954B2 (en) * 2003-09-07 2010-08-24 Microsoft Corporation Scan patterns for progressive video content
GB2408858B (en) * 2003-12-05 2006-11-29 Wolfson Ltd Word length reduction circuit
US8180631B2 (en) * 2005-07-11 2012-05-15 Lg Electronics Inc. Apparatus and method of processing an audio signal, utilizing a unique offset associated with each coded-coefficient
US7693709B2 (en) 2005-07-15 2010-04-06 Microsoft Corporation Reordering coefficients for waveform coding or decoding
US7684981B2 (en) * 2005-07-15 2010-03-23 Microsoft Corporation Prediction of spectral coefficients in waveform coding and decoding
US7599840B2 (en) * 2005-07-15 2009-10-06 Microsoft Corporation Selectively using multiple entropy models in adaptive coding and decoding
US8599925B2 (en) * 2005-08-12 2013-12-03 Microsoft Corporation Efficient coding and decoding of transform blocks
US7565018B2 (en) * 2005-08-12 2009-07-21 Microsoft Corporation Adaptive coding and decoding of wide-range coefficients
US7933337B2 (en) * 2005-08-12 2011-04-26 Microsoft Corporation Prediction of transform coefficients for image compression
US8184710B2 (en) * 2007-02-21 2012-05-22 Microsoft Corporation Adaptive truncation of transform coefficient data in a transform-based digital media codec
US7774205B2 (en) * 2007-06-15 2010-08-10 Microsoft Corporation Coding of sparse digital media spectral data
US8179974B2 (en) 2008-05-02 2012-05-15 Microsoft Corporation Multi-level representation of reordered transform coefficients
US8406307B2 (en) * 2008-08-22 2013-03-26 Microsoft Corporation Entropy coding/decoding of hierarchically organized data

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE331480C (de) * 1914-08-04 1921-01-08 Hermann Maas Maschine zur Herstellung von Zigarrenwickeln
JPS5922165A (ja) * 1982-07-28 1984-02-04 Nippon Telegr & Teleph Corp <Ntt> アドレス制御回路
DE3310480C2 (de) * 1983-03-23 1986-02-13 Seitzer, Dieter, Prof. Dr.-Ing., 8520 Erlangen Digitales Codierverfahren für Audiosignale
CA1208789A (en) * 1983-11-25 1986-07-29 Peter E. Chow Adpcm encoder/decoder with improved tracking
US4680797A (en) * 1984-06-26 1987-07-14 The United States Of America As Represented By The Secretary Of The Air Force Secure digital speech communication
EP0385799A3 (de) * 1989-03-02 1991-04-17 Seiko Instruments Inc. Verfahren zur Sprachsignalverarbeitung
US4932062A (en) * 1989-05-15 1990-06-05 Dialogic Corporation Method and apparatus for frequency analysis of telephone signals

Also Published As

Publication number Publication date
JP3154482B2 (ja) 2001-04-09
EP0397564A3 (de) 1991-04-10
JPH02308632A (ja) 1990-12-21
FR2646978A1 (fr) 1990-11-16
DE69017074T2 (de) 1995-10-12
US5089818A (en) 1992-02-18
EP0397564B1 (de) 1995-02-22
EP0397564A2 (de) 1990-11-14
FR2646978B1 (fr) 1991-08-23

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