FR2747225B1 - Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique - Google Patents

Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique

Info

Publication number
FR2747225B1
FR2747225B1 FR9604483A FR9604483A FR2747225B1 FR 2747225 B1 FR2747225 B1 FR 2747225B1 FR 9604483 A FR9604483 A FR 9604483A FR 9604483 A FR9604483 A FR 9604483A FR 2747225 B1 FR2747225 B1 FR 2747225B1
Authority
FR
France
Prior art keywords
subband
bank
coder
primary
streams
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 - Fee Related
Application number
FR9604483A
Other languages
English (en)
Other versions
FR2747225A1 (fr
Inventor
Laurent Mainard
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
Priority to FR9604483A priority Critical patent/FR2747225B1/fr
Priority to EP97919457A priority patent/EP0891617B1/fr
Priority to PCT/FR1997/000582 priority patent/WO1997038417A1/fr
Priority to US09/155,168 priority patent/US6058361A/en
Priority to DE69700837T priority patent/DE69700837T2/de
Publication of FR2747225A1 publication Critical patent/FR2747225A1/fr
Application granted granted Critical
Publication of FR2747225B1 publication Critical patent/FR2747225B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • G10L19/04—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
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
FR9604483A 1996-04-03 1996-04-03 Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique Expired - Fee Related FR2747225B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR9604483A FR2747225B1 (fr) 1996-04-03 1996-04-03 Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique
EP97919457A EP0891617B1 (fr) 1996-04-03 1997-04-02 Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique
PCT/FR1997/000582 WO1997038417A1 (fr) 1996-04-03 1997-04-02 Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique
US09/155,168 US6058361A (en) 1996-04-03 1997-04-02 Two-stage Hierarchical subband coding and decoding system, especially for a digitized audio signal
DE69700837T DE69700837T2 (de) 1996-04-03 1997-04-02 System zur kodierung und dekodierung eines signals, insbesondere eines digitalen audiosignals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9604483A FR2747225B1 (fr) 1996-04-03 1996-04-03 Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique

Publications (2)

Publication Number Publication Date
FR2747225A1 FR2747225A1 (fr) 1997-10-10
FR2747225B1 true FR2747225B1 (fr) 1998-04-30

Family

ID=9491074

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9604483A Expired - Fee Related FR2747225B1 (fr) 1996-04-03 1996-04-03 Systeme de codage et systeme de decodage d'un signal, notamment d'un signal audionumerique

Country Status (5)

Country Link
US (1) US6058361A (fr)
EP (1) EP0891617B1 (fr)
DE (1) DE69700837T2 (fr)
FR (1) FR2747225B1 (fr)
WO (1) WO1997038417A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6728344B1 (en) * 1999-07-16 2004-04-27 Agere Systems Inc. Efficient compression of VROM messages for telephone answering devices
KR100871999B1 (ko) * 2001-05-08 2008-12-05 코닌클리케 필립스 일렉트로닉스 엔.브이. 오디오 코딩
JP3855827B2 (ja) * 2002-04-05 2006-12-13 ソニー株式会社 ２次元サブバンド符号化装置
US8352248B2 (en) 2003-01-03 2013-01-08 Marvell International Ltd. Speech compression method and apparatus
US7548853B2 (en) * 2005-06-17 2009-06-16 Shmunk Dmitry V Scalable compressed audio bit stream and codec using a hierarchical filterbank and multichannel joint coding
FI20065010A0 (fi) * 2006-01-09 2006-01-09 Nokia Corp Häiriönvaimennuksen yhdistäminen tietoliikennejärjestelmässä

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4956871A (en) * 1988-09-30 1990-09-11 At&T Bell Laboratories Improving sub-band coding of speech at low bit rates by adding residual speech energy signals to sub-bands
US5495552A (en) * 1992-04-20 1996-02-27 Mitsubishi Denki Kabushiki Kaisha Methods of efficiently recording an audio signal in semiconductor memory

Also Published As

Publication number Publication date
FR2747225A1 (fr) 1997-10-10
EP0891617A1 (fr) 1999-01-20
WO1997038417A1 (fr) 1997-10-16
DE69700837T2 (de) 2000-07-20
DE69700837D1 (de) 1999-12-30
EP0891617B1 (fr) 1999-11-24
US6058361A (en) 2000-05-02

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Effective date: 20151231