ES2145737T3 - Codificador digital de voz con predictor a largo plazo mejorado por resolucion de submuestreos. - Google Patents

Codificador digital de voz con predictor a largo plazo mejorado por resolucion de submuestreos.

Info

Publication number
ES2145737T3
ES2145737T3 ES91905041T ES91905041T ES2145737T3 ES 2145737 T3 ES2145737 T3 ES 2145737T3 ES 91905041 T ES91905041 T ES 91905041T ES 91905041 T ES91905041 T ES 91905041T ES 2145737 T3 ES2145737 T3 ES 2145737T3
Authority
ES
Spain
Prior art keywords
long
term
term predictor
vector
delayed
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
ES91905041T
Other languages
English (en)
Other versions
ES2145737T5 (es
Inventor
Ira Alan Gerson
Mark A Jasiuk
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23590969&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES2145737(T3) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of ES2145737T3 publication Critical patent/ES2145737T3/es
Publication of ES2145737T5 publication Critical patent/ES2145737T5/es
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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0012—Smoothing of parameters of the decoder interpolation

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Complex Calculations (AREA)
  • Analogue/Digital Conversion (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Near-Field Transmission Systems (AREA)

Abstract

UN CODIFICADOR DIGITAL DE HABLA INCLUYE UN FILTRO DE LARGO PLAZO (124) CON UN PRONOSTICADOR A LARGO PLAZO DE RESOLUCION DE SUBMUESTRA MEJORADA QUE PERMITE LA RESOLUCION DE SUBMUESTRA PARA EL PARAMETRO DE RETRASO L. SE APLICA UN MARCO DE MUESTRAS N DE VECTOR DE ENTRADA DE HABLA S(N) A UN CIRCUITO DE ADICION (510). LA SALIDA DEL CIRCUITO DE ADICION (510) PRODUCE LA SALIDA DEL VECTOR B(N) PARA EL FILTRO A LARGO PLAZO (124). EL VECTOR DE SALIDA B(N) ES RETROALIMENTADO A UN BLOQUE GENERADOR (530) DE VECTOR DE RETARDO DEL PRONOSTICADOR A LARGO PLAZO. EL PARAMETRO DE RETRASO L DEL PRONOSTICADOR NOMINAL A LARGO PLAZO TAMBIEN ES INTRODUCIDO AL BLOQUE GENERADOR DEL VECTOR DE RETARDO (530). EL PARAMETRO L DE RETRASO DEL PRONOSTICADOR A LARGO PLAZO PUEDE TOMAR VALORES NO ENTEROS, QUE PUEDEN SER MULTIPLOS DE UN MEDIO, UN TERCIO, UN CUARTO O CUALQUIER OTRA FRACCION RACIONAL. EL GENERADOR DE VECTOR DE RETARDO (530) INCLUYE UNA MEMORIA QUE SOSTIENE LAS MUESTRAS ANTERIORES DE B(N). ADEMAS, TAMBIEN SE CALCULAN LAS MUESTRAS DE B(N) INTERPOLADAS POR EL GENERADOR DE VECTOR RETARDADO (530) Y SE ALMACENAN EN SU MEMORIA, POR LO MENOS UNA MUESTRA INTERPOLADA ES CALCULADA Y ALMACENADA ENTRE CADA MUESTRA ANTERIOR DE B(N). EL GENERADOR DE VECTOR RETARDADO (530) FACILITA UN VECTOR DE SALIDA Q(N) AL BLOQUE MULTIPLICADOR A LARGO PLAZO (520), QUE ESCALA LA RESPUESTA DEL PRONOSTICADOR A LARGO PLAZO POR EL COEFICIENTE BETA DEL PRONOSTICADOR A LARGO PLAZO. LA SALIDA ESCALADA BETAQ(N) SE APLICA ENTONCES AL CIRCUITO DE ADICION (510) PARA COMPLETAR LA CURVA DE RETROALIMENTACION DEL FILTRO RECURSIVO (124).
ES91905041T 1989-09-01 1990-06-25 Codificador digital de voz con predictor a largo plazo mejorado por resolucion de submuestreos. Expired - Lifetime ES2145737T5 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40220689A 1989-09-01 1989-09-01
US402206 1989-09-01

Publications (2)

Publication Number Publication Date
ES2145737T3 true ES2145737T3 (es) 2000-07-16
ES2145737T5 ES2145737T5 (es) 2007-03-01

Family

ID=23590969

Family Applications (1)

Application Number Title Priority Date Filing Date
ES91905041T Expired - Lifetime ES2145737T5 (es) 1989-09-01 1990-06-25 Codificador digital de voz con predictor a largo plazo mejorado por resolucion de submuestreos.

Country Status (12)

Country Link
EP (1) EP0450064B2 (es)
JP (1) JP3268360B2 (es)
CN (1) CN1026274C (es)
AT (1) ATE191987T1 (es)
AU (1) AU634795B2 (es)
CA (1) CA2037899C (es)
DE (1) DE69033510T3 (es)
DK (1) DK0450064T4 (es)
ES (1) ES2145737T5 (es)
MX (1) MX167644B (es)
SG (1) SG47028A1 (es)
WO (1) WO1991003790A1 (es)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5327520A (en) * 1992-06-04 1994-07-05 At&T Bell Laboratories Method of use of voice message coder/decoder
FR2702590B1 (fr) * 1993-03-12 1995-04-28 Dominique Massaloux Dispositif de codage et de décodage numériques de la parole, procédé d'exploration d'un dictionnaire pseudo-logarithmique de délais LTP, et procédé d'analyse LTP.
FI96248C (fi) 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Menetelmä pitkän aikavälin synteesisuodattimen toteuttamiseksi sekä synteesisuodatin puhekoodereihin
DE4421853A1 (de) * 1994-06-22 1996-01-04 Philips Patentverwaltung Mobilfunkendgerät
GB9408037D0 (en) * 1994-04-22 1994-06-15 Philips Electronics Uk Ltd Analogue signal coder
JP2970407B2 (ja) * 1994-06-21 1999-11-02 日本電気株式会社 音声の励振信号符号化装置
FR2729244B1 (fr) * 1995-01-06 1997-03-28 Matra Communication Procede de codage de parole a analyse par synthese
FR2729246A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
FR2729247A1 (fr) * 1995-01-06 1996-07-12 Matra Communication Procede de codage de parole a analyse par synthese
US5708757A (en) * 1996-04-22 1998-01-13 France Telecom Method of determining parameters of a pitch synthesis filter in a speech coder, and speech coder implementing such method
JP4857467B2 (ja) 2001-01-25 2012-01-18 ソニー株式会社 データ処理装置およびデータ処理方法、並びにプログラムおよび記録媒体
JP4857468B2 (ja) * 2001-01-25 2012-01-18 ソニー株式会社 データ処理装置およびデータ処理方法、並びにプログラムおよび記録媒体
GB2466673B (en) 2009-01-06 2012-11-07 Skype Quantization
GB2466671B (en) 2009-01-06 2013-03-27 Skype Speech encoding
GB2466675B (en) 2009-01-06 2013-03-06 Skype Speech coding
GB2466674B (en) 2009-01-06 2013-11-13 Skype Speech coding
GB2466672B (en) * 2009-01-06 2013-03-13 Skype Speech coding
WO2013056388A1 (en) * 2011-10-18 2013-04-25 Telefonaktiebolaget L M Ericsson (Publ) An improved method and apparatus for adaptive multi rate codec
FR3015754A1 (fr) 2013-12-20 2015-06-26 Orange Re-echantillonnage d'un signal audio cadence a une frequence d'echantillonnage variable selon la trame

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL168669C (nl) * 1974-09-16 1982-04-16 Philips Nv Interpolerend digitaal filter met ingangsbuffer.
US4080660A (en) * 1975-07-11 1978-03-21 James Nickolas Constant Digital signal time scale inversion
US4020332A (en) * 1975-09-24 1977-04-26 Bell Telephone Laboratories, Incorporated Interpolation-decimation circuit for increasing or decreasing digital sampling frequency
NL8105801A (nl) * 1981-12-23 1983-07-18 Philips Nv Recursief digitaal filter.
US4573135A (en) * 1983-04-25 1986-02-25 Rca Corporation Digital lowpass filter having controllable gain
JPS60116000A (ja) * 1983-11-28 1985-06-22 ケイディディ株式会社 音声符号化装置
JPS63214032A (ja) * 1987-03-02 1988-09-06 Fujitsu Ltd 符号化伝送装置
JPS63249200A (ja) * 1987-04-06 1988-10-17 日本電信電話株式会社 ベクトル量子化方式
JPH01177227A (ja) * 1988-01-05 1989-07-13 Toshiba Corp 音声コーデック

Also Published As

Publication number Publication date
EP0450064B2 (en) 2006-08-09
MX167644B (es) 1993-03-31
DE69033510D1 (de) 2000-05-25
DK0450064T3 (da) 2000-10-02
EP0450064A1 (en) 1991-10-09
DK0450064T4 (da) 2006-09-04
CN1050633A (zh) 1991-04-10
JP3268360B2 (ja) 2002-03-25
SG47028A1 (en) 1998-03-20
WO1991003790A1 (en) 1991-03-21
EP0450064A4 (en) 1995-04-05
ES2145737T5 (es) 2007-03-01
EP0450064B1 (en) 2000-04-19
CN1026274C (zh) 1994-10-19
CA2037899A1 (en) 1991-03-02
AU634795B2 (en) 1993-03-04
DE69033510T3 (de) 2007-06-06
DE69033510T2 (de) 2000-11-23
ATE191987T1 (de) 2000-05-15
JPH04502675A (ja) 1992-05-14
AU5952590A (en) 1991-04-08
CA2037899C (en) 1996-09-17

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