ES2183358T3 - Procedimiento y dispositivo de codificacion de una señal de audiofrecuencia por analisis lpc "avance" y "retroceso". - Google Patents
Procedimiento y dispositivo de codificacion de una señal de audiofrecuencia por analisis lpc "avance" y "retroceso".Info
- Publication number
- ES2183358T3 ES2183358T3 ES98920601T ES98920601T ES2183358T3 ES 2183358 T3 ES2183358 T3 ES 2183358T3 ES 98920601 T ES98920601 T ES 98920601T ES 98920601 T ES98920601 T ES 98920601T ES 2183358 T3 ES2183358 T3 ES 2183358T3
- Authority
- ES
- Spain
- Prior art keywords
- lpc
- coding
- analysis
- previous
- audio frequency
- 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
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000001914 filtration Methods 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- VJYFKVYYMZPMAB-UHFFFAOYSA-N ethoprophos Chemical compound CCCSP(=O)(OCC)SCCC VJYFKVYYMZPMAB-UHFFFAOYSA-N 0.000 abstract 1
- 230000005236 sound signal Effects 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
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)
Abstract
LA INVENCION SE REFIERE A UN PROCEDIMIENTO Y A UN DISPOSITIVO DE CODIFICACION DE UNA SEÑAL DE AUDIO DIGITAL POR ANALISIS LPC "ANTERIOR" Y "POSTERIOR". LA CODIFICACION SE EFECTUA POR FILTRACION LPC "ANTERIOR" PARA LAS ZONAS NO ESTACIONARIAS Y EN LA SEÑAL DE SINTESIS A PARTIR DE UNA FILTRACION LPC "POSTERIOR" PARA LAS ZONAS ESTACIONARIAS. PARA CADA BLOQUE LPC ACTUAL (Bn) (10), EL GRADO DE ESTACIONARIDAD DE LA SEÑAL DIGITAL DE AUDIOFRECUENCIA ESTA DETERMINADO (11), Y SE ESTABLECE UN VALOR DE ELECCION DE ANALISIS LPC "ANTERIOR" O "POSTERIOR" (12) A PARTIR DE UNA FUNCION DE DECISION, EN FUNCION DEL PARAMETRO DE ESTACIONARIDAD. UN CRITERIO DE ELECCION DE ANALISIS LPC "ANTERIOR" O "POSTERIOR" SE APLICA (13) AL VALOR DE ELECCION DE ANALISIS PARA EFECTUAR LA CODIFICACION DE LA SEÑAL DE AUDIOFRECUENCIA Y A CONTINUACION, PASAR AL SIGUIENTE BLOQUE LPC. APLICACION EN LA RADIOTELEFONIA MOVIL, LA CREACION, LA MEMORIZACION Y LA REPRODUCCION DE FONOGRAMAS, LA TRANSMISION POR SATELITE Y LA TELEFONIA DE BANDAANCHA.
Applications Claiming Priority (1)
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" |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2183358T3 true ES2183358T3 (es) | 2003-03-16 |
Family
ID=9505979
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98920601T Expired - Lifetime ES2183358T3 (es) | 1997-04-16 | 1998-04-09 | Procedimiento y dispositivo de codificacion de una señal de audiofrecuencia por analisis lpc "avance" y "retroceso". |
Country Status (12)
Country | Link |
---|---|
US (1) | US6327562B1 (es) |
EP (1) | EP0906613B1 (es) |
JP (1) | JP3564144B2 (es) |
CN (1) | CN1122256C (es) |
AU (1) | AU729584B2 (es) |
BR (1) | BR9804852B1 (es) |
CA (1) | CA2258695C (es) |
DE (1) | DE69807806T2 (es) |
ES (1) | ES2183358T3 (es) |
FR (1) | FR2762464B1 (es) |
HK (1) | HK1020101A1 (es) |
WO (1) | WO1998047134A1 (es) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
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 |
WO2001084536A1 (de) * | 2000-04-28 | 2001-11-08 | 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 |
EP1991986B1 (en) * | 2006-03-07 | 2019-07-31 | Telefonaktiebolaget LM Ericsson (publ) | Methods and arrangements for audio coding |
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)
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 |
-
1997
- 1997-04-16 FR FR9704684A patent/FR2762464B1/fr not_active Expired - Lifetime
-
1998
- 1998-04-09 EP EP98920601A patent/EP0906613B1/fr not_active Expired - Lifetime
- 1998-04-09 CN CN98800863A patent/CN1122256C/zh not_active Expired - Lifetime
- 1998-04-09 JP JP54355598A patent/JP3564144B2/ja not_active Expired - Lifetime
- 1998-04-09 AU AU73404/98A patent/AU729584B2/en not_active Expired
- 1998-04-09 US US09/202,753 patent/US6327562B1/en not_active Expired - Lifetime
- 1998-04-09 CA CA002258695A patent/CA2258695C/en not_active Expired - Lifetime
- 1998-04-09 WO PCT/FR1998/000723 patent/WO1998047134A1/fr active IP Right Grant
- 1998-04-09 ES ES98920601T patent/ES2183358T3/es not_active Expired - Lifetime
- 1998-04-09 DE DE69807806T patent/DE69807806T2/de not_active Expired - Lifetime
- 1998-04-09 BR BRPI9804852-0A patent/BR9804852B1/pt not_active IP Right Cessation
-
1999
- 1999-11-15 HK HK99105267A patent/HK1020101A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
BR9804852B1 (pt) | 2011-04-19 |
JP2000512777A (ja) | 2000-09-26 |
AU729584B2 (en) | 2001-02-08 |
CN1229501A (zh) | 1999-09-22 |
US6327562B1 (en) | 2001-12-04 |
AU7340498A (en) | 1998-11-11 |
CN1122256C (zh) | 2003-09-24 |
HK1020101A1 (en) | 2000-03-10 |
CA2258695A1 (en) | 1998-10-22 |
CA2258695C (en) | 2003-02-11 |
BR9804852A (pt) | 1999-08-24 |
JP3564144B2 (ja) | 2004-09-08 |
WO1998047134A1 (fr) | 1998-10-22 |
EP0906613A1 (fr) | 1999-04-07 |
DE69807806D1 (de) | 2002-10-17 |
DE69807806T2 (de) | 2003-08-07 |
FR2762464A1 (fr) | 1998-10-23 |
EP0906613B1 (fr) | 2002-09-11 |
FR2762464B1 (fr) | 1999-06-25 |
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