BR9804852B1 - processo e dispositivo de codificação de um sinal de audiofrequência por análise lpc "dianteira" e "traseira". - Google Patents

processo e dispositivo de codificação de um sinal de audiofrequência por análise lpc "dianteira" e "traseira".

Info

Publication number
BR9804852B1
BR9804852B1 BRPI9804852-0A BR9804852A BR9804852B1 BR 9804852 B1 BR9804852 B1 BR 9804852B1 BR 9804852 A BR9804852 A BR 9804852A BR 9804852 B1 BR9804852 B1 BR 9804852B1
Authority
BR
Brazil
Prior art keywords
coding
frequency signal
audio frequency
lpc
lpc audio
Prior art date
Application number
BRPI9804852-0A
Other languages
English (en)
Other versions
BR9804852A (pt
Inventor
Stephane Proust
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 filed Critical
Publication of BR9804852A publication Critical patent/BR9804852A/pt
Publication of BR9804852B1 publication Critical patent/BR9804852B1/pt

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)
BRPI9804852-0A 1997-04-16 1998-04-09 processo e dispositivo de codificação de um sinal de audiofrequência por análise lpc "dianteira" e "traseira". BR9804852B1 (pt)

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
BR9804852A BR9804852A (pt) 1999-08-24
BR9804852B1 true BR9804852B1 (pt) 2011-04-19

Family

ID=9505979

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9804852-0A BR9804852B1 (pt) 1997-04-16 1998-04-09 processo e dispositivo de codificação de um sinal de audiofrequência por análise lpc "dianteira" e "traseira".

Country Status (12)

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

Families Citing this family (18)

* Cited by examiner, † Cited by third party
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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
EP1052622B1 (en) * 1999-05-11 2007-07-11 Nippon Telegraph and Telephone Corporation Selection of a synthesis filter for CELP type wideband audio coding
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 (en) * 2000-10-20 2002-04-24 Telefonaktiebolaget Lm Ericsson Error Concealment in relation to decoding of encoded acoustic signals
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
US8781842B2 (en) * 2006-03-07 2014-07-15 Telefonaktiebolaget Lm Ericsson (Publ) Scalable coding with non-casual predictive information in an enhancement layer
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 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method and apparatus for processing an audio signal, audio decoder, and audio encoder

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0422232B1 (en) * 1989-04-25 1996-11-13 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
CA2258695C (en) 2003-02-11
JP3564144B2 (ja) 2004-09-08
DE69807806D1 (de) 2002-10-17
EP0906613B1 (fr) 2002-09-11
BR9804852A (pt) 1999-08-24
AU7340498A (en) 1998-11-11
JP2000512777A (ja) 2000-09-26
CN1122256C (zh) 2003-09-24
ES2183358T3 (es) 2003-03-16
FR2762464A1 (fr) 1998-10-23
CA2258695A1 (en) 1998-10-22
DE69807806T2 (de) 2003-08-07
FR2762464B1 (fr) 1999-06-25
CN1229501A (zh) 1999-09-22
WO1998047134A1 (fr) 1998-10-22
HK1020101A1 (en) 2000-03-10
EP0906613A1 (fr) 1999-04-07
AU729584B2 (en) 2001-02-08
US6327562B1 (en) 2001-12-04

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Legal Events

Date Code Title Description
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 19/04/2011, OBSERVADAS AS CONDICOES LEGAIS.

B15K Others concerning applications: alteration of classification

Ipc: G10L 19/18 (2013.01), G10L 19/06 (2013.0

B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 19.04.2021