DE69807806D1 - Verfahren und vorrichtung zur kodierung eines audiosignals mittels "vorwärts"- und "rückwärts"-lpc-analyse - Google Patents

Verfahren und vorrichtung zur kodierung eines audiosignals mittels "vorwärts"- und "rückwärts"-lpc-analyse

Info

Publication number
DE69807806D1
DE69807806D1 DE69807806T DE69807806T DE69807806D1 DE 69807806 D1 DE69807806 D1 DE 69807806D1 DE 69807806 T DE69807806 T DE 69807806T DE 69807806 T DE69807806 T DE 69807806T DE 69807806 D1 DE69807806 D1 DE 69807806D1
Authority
DE
Germany
Prior art keywords
coding
reverse
audio signal
lpc analysis
lpc
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
DE69807806T
Other languages
English (en)
Other versions
DE69807806T2 (de
Inventor
Stephane Proust
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 DE69807806D1 publication Critical patent/DE69807806D1/de
Application granted granted Critical
Publication of DE69807806T2 publication Critical patent/DE69807806T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients

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)
  • Radio Relay Systems (AREA)
DE69807806T 1997-04-16 1998-04-09 Verfahren und vorrichtung zur kodierung eines audiosignals mittels "vorwärts"- und "rückwärts"-lpc-analyse Expired - Lifetime DE69807806T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9704684A FR2762464B1 (fr) 1997-04-16 1997-04-16 Procede et dispositif de codage d'un signal audiofrequence par analyse lpc "avant" et "arriere"
PCT/FR1998/000723 WO1998047134A1 (fr) 1997-04-16 1998-04-09 Procede et dispositif de codage d'un signal audiofrequence par analyse lpc 'avant' et 'arriere'

Publications (2)

Publication Number Publication Date
DE69807806D1 true DE69807806D1 (de) 2002-10-17
DE69807806T2 DE69807806T2 (de) 2003-08-07

Family

ID=9505979

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69807806T Expired - Lifetime DE69807806T2 (de) 1997-04-16 1998-04-09 Verfahren und vorrichtung zur kodierung eines audiosignals mittels "vorwärts"- und "rückwärts"-lpc-analyse

Country Status (12)

Country Link
US (1) US6327562B1 (de)
EP (1) EP0906613B1 (de)
JP (1) JP3564144B2 (de)
CN (1) CN1122256C (de)
AU (1) AU729584B2 (de)
BR (1) BR9804852B1 (de)
CA (1) CA2258695C (de)
DE (1) DE69807806T2 (de)
ES (1) ES2183358T3 (de)
FR (1) FR2762464B1 (de)
HK (1) HK1020101A1 (de)
WO (1) WO1998047134A1 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6542857B1 (en) * 1996-02-06 2003-04-01 The Regents Of The University Of California System and method for characterizing synthesizing and/or canceling out acoustic signals from inanimate sound sources
US6377919B1 (en) * 1996-02-06 2002-04-23 The Regents Of The University Of California System and method for characterizing voiced excitations of speech and acoustic signals, removing acoustic noise from speech, and synthesizing speech
FR2774827B1 (fr) * 1998-02-06 2000-04-14 France Telecom Procede de decodage d'un flux binaire representatif d'un signal audio
DE60035453T2 (de) * 1999-05-11 2008-03-20 Nippon Telegraph And Telephone Corp. Auswahl des Synthesefilters für eine CELP Kodierung von breitbandigen Audiosignalen
US6633841B1 (en) * 1999-07-29 2003-10-14 Mindspeed Technologies, Inc. Voice activity detection speech coding to accommodate music signals
US6959274B1 (en) 1999-09-22 2005-10-25 Mindspeed Technologies, Inc. Fixed rate speech compression system and method
EP1279164A1 (de) * 2000-04-28 2003-01-29 Deutsche Telekom AG Verfahren zur berechnung einer sprachaktivitätsentscheidung (voice activity detector)
EP1199709A1 (de) * 2000-10-20 2002-04-24 Telefonaktiebolaget Lm Ericsson Fehlerverdeckung in Bezug auf die Dekodierung von kodierten akustischen Signalen
JP4591939B2 (ja) * 2001-05-15 2010-12-01 Ｋｄｄｉ株式会社 適応的符号化伝送装置および受信装置
SE521600C2 (sv) * 2001-12-04 2003-11-18 Global Ip Sound Ab Lågbittaktskodek
US7685598B1 (en) * 2003-12-23 2010-03-23 The Weather Channel, Inc. Desktop application framework
JP4606264B2 (ja) * 2005-07-19 2011-01-05 三洋電機株式会社 ノイズキャンセラ
EP1991986B1 (de) * 2006-03-07 2019-07-31 Telefonaktiebolaget LM Ericsson (publ) Verfahren und anordnungen zur audiokodierung
CN101051464A (zh) * 2006-04-06 2007-10-10 株式会社东芝 说话人认证的注册和验证方法及装置
KR101393298B1 (ko) * 2006-07-08 2014-05-12 삼성전자주식회사 적응적 부호화/복호화 방법 및 장치
KR20100006492A (ko) * 2008-07-09 2010-01-19 삼성전자주식회사 부호화 방식 결정 방법 및 장치
FR2961937A1 (fr) * 2010-06-29 2011-12-30 France Telecom Codage/decodage predictif lineaire adaptatif
EP2980796A1 (de) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und Vorrichtung zur Verarbeitung eines Audiosignals, Audiodecodierer und Audiocodierer
CN117951809B (zh) * 2024-01-30 2024-07-23 西北工业大学 高空长航时无人机高速高升力层流翼型设计方法及翼型族

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990013112A1 (en) * 1989-04-25 1990-11-01 Kabushiki Kaisha Toshiba Voice encoder
US5233660A (en) * 1991-09-10 1993-08-03 At&T Bell Laboratories Method and apparatus for low-delay celp speech coding and decoding
SE501981C2 (sv) * 1993-11-02 1995-07-03 Ericsson Telefon Ab L M Förfarande och anordning för diskriminering mellan stationära och icke stationära signaler
US5717823A (en) * 1994-04-14 1998-02-10 Lucent Technologies Inc. Speech-rate modification for linear-prediction based analysis-by-synthesis speech coders
US5793980A (en) * 1994-11-30 1998-08-11 Realnetworks, Inc. Audio-on-demand communication system
US5751903A (en) * 1994-12-19 1998-05-12 Hughes Electronics Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
US6070140A (en) * 1995-06-05 2000-05-30 Tran; Bao Q. Speech recognizer
US5774837A (en) * 1995-09-13 1998-06-30 Voxware, Inc. Speech coding system and method using voicing probability determination
US5812954A (en) * 1995-11-27 1998-09-22 Nokia Mobile Phones Ltd. Mobile telephone power key lock function
US6006175A (en) * 1996-02-06 1999-12-21 The Regents Of The University Of California Methods and apparatus for non-acoustic speech characterization and recognition
US5903866A (en) * 1997-03-10 1999-05-11 Lucent Technologies Inc. Waveform interpolation speech coding using splines
US6161089A (en) * 1997-03-14 2000-12-12 Digital Voice Systems, Inc. Multi-subframe quantization of spectral parameters
US5995923A (en) * 1997-06-26 1999-11-30 Nortel Networks Corporation Method and apparatus for improving the voice quality of tandemed vocoders

Also Published As

Publication number Publication date
CN1229501A (zh) 1999-09-22
BR9804852A (pt) 1999-08-24
CA2258695C (en) 2003-02-11
JP3564144B2 (ja) 2004-09-08
FR2762464B1 (fr) 1999-06-25
FR2762464A1 (fr) 1998-10-23
AU7340498A (en) 1998-11-11
CA2258695A1 (en) 1998-10-22
AU729584B2 (en) 2001-02-08
BR9804852B1 (pt) 2011-04-19
WO1998047134A1 (fr) 1998-10-22
HK1020101A1 (en) 2000-03-10
US6327562B1 (en) 2001-12-04
EP0906613B1 (de) 2002-09-11
JP2000512777A (ja) 2000-09-26
EP0906613A1 (de) 1999-04-07
CN1122256C (zh) 2003-09-24
DE69807806T2 (de) 2003-08-07
ES2183358T3 (es) 2003-03-16

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