ES2112808A1 - Analisis de codigos algebraicos cifrados de tipo de profundidad en primer lugar para codificacion rapida de voz. - Google Patents

Analisis de codigos algebraicos cifrados de tipo de profundidad en primer lugar para codificacion rapida de voz.

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Publication number
ES2112808A1
ES2112808A1 ES09650035A ES9650035A ES2112808A1 ES 2112808 A1 ES2112808 A1 ES 2112808A1 ES 09650035 A ES09650035 A ES 09650035A ES 9650035 A ES9650035 A ES 9650035A ES 2112808 A1 ES2112808 A1 ES 2112808A1
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Prior art keywords
path
pulse
search
positions
candidate
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ES09650035A
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ES2112808B1 (es
Inventor
Jean-Pierre Adoul
Claude Laflamme
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Universite de Sherbrooke
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Universite de Sherbrooke
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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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • G10L19/107—Sparse pulse excitation, e.g. by using algebraic codebook
    • 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
    • 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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation
    • 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
    • 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
    • G10L2019/0004—Design or structure of the codebook
    • 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
    • G10L2019/0007—Codebook element generation
    • G10L2019/0008—Algebraic codebooks
    • 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
    • G10L2019/0013—Codebook search algorithms
    • 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
    • G10L2019/0013—Codebook search algorithms
    • G10L2019/0014—Selection criteria for distances
    • 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
    • G10L25/06—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 correlation coefficients

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Complex Calculations (AREA)

Abstract

SE ANALIZA UN CODIGO CIFRADO CON VISTAS A CODIFICAR UNA SEÑAL DE SONIDO. ESTE CODIGO CIFRADO COMPRENDE UN CONJUNTO DE CODIGOS DE VECTORES, CADA UNO DE 40 POSICIONES Y QUE COMPRENDE N PULSOS DE AMPLITUD NO CERO ASIGNABLES A POSICIONES PREDETERMINADAS VALIDAS. PARA REDUCIR LA COMPLEJIDAD DEL ANALISIS, SE UTILIZA UN ANALISIS DE TIPO DE PROFUNDIDAD EN PRIMER LUGAR EN EL QUE INTERVIENE UNA ESTRUCTURA RAMIFICADA CON NIVELES ORDENADOS DE 1 A M. EN CADA NIVEL SE PRODUCE UNA OPERACION DE CONSTRUCCION DE TRAYECTORIA CON LO QUE UNA TRAYECTORIA CANDIDATA QUE PROCEDE DEL NIVEL ANTERIOR ES EXTENDIDA ELIGIENDO UN NUMERO PREDETERMINADO DE NUEVOS PULSOS Y SELECCIONANDO POSICIONES VALIDAS PARA DICHOS NUEVOS PULSOS SEGUN UNA REGLA DADA DE ORDEN DE PULSOS Y A UN CRITERIO DADO DE SELECCION. UNA TRAYECTORIA ORIGINADA EN EL PRIMER NIVEL Y EXTENDIDA POR LAS OPERACIONES DE CONSTRUCCION DE TRAYECTORIAS DE NIVELES SUBSIGUIENTES DETERMINA LAS RESPECTIVAS POSICIONES DE LOS N PULSOS DE AMPLITUD NO CERO DE UN VECTOR DE CODIGO CIFRADO. LA UTILIZACION DE UNA ESTIMACION DE PROBABILIDAD DE POSICION DE PULSO EN BASE A SEÑALES DURANTE LOS PRIMEROS NIVELES PERMITE QUE EL TAMIZADO DE PULSOS INICIAL COMIENCE EL ANALISIS DE CONDICIONES FAVORABLES. SE UTILIZA UN CRITERIO DE SELECCION QUE SE BASA EN MAXIMIZAR UNA RELACION PARA EVALUAR EL PROGRESO Y PARA ELEGIR EL MEJOR VECTOR DE CODIGO ENTRE CODIGOS DE VECTORES CANDIDATOS COMPETIDORES.
ES09650035A 1995-03-10 1996-09-19 Analisis de codigos algebraicos cifrados de tipo de profundidad en primer lugar para codificacion rapida de voz. Expired - Fee Related ES2112808B1 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40178595A 1995-03-10 1995-03-10
US08/509,525 US5701392A (en) 1990-02-23 1995-07-31 Depth-first algebraic-codebook search for fast coding of speech

Publications (2)

Publication Number Publication Date
ES2112808A1 true ES2112808A1 (es) 1998-04-01
ES2112808B1 ES2112808B1 (es) 1998-11-16

Family

ID=27017596

Family Applications (1)

Application Number Title Priority Date Filing Date
ES09650035A Expired - Fee Related ES2112808B1 (es) 1995-03-10 1996-09-19 Analisis de codigos algebraicos cifrados de tipo de profundidad en primer lugar para codificacion rapida de voz.

Country Status (24)

Country Link
US (1) US5701392A (es)
EP (1) EP0813736B1 (es)
JP (1) JP3160852B2 (es)
KR (1) KR100299408B1 (es)
CN (1) CN1114900C (es)
AR (1) AR001189A1 (es)
AT (1) ATE193392T1 (es)
AU (1) AU707307B2 (es)
BR (1) BR9607144A (es)
CA (1) CA2213740C (es)
DE (1) DE19609170B4 (es)
DK (1) DK0813736T3 (es)
ES (1) ES2112808B1 (es)
FR (1) FR2731548B1 (es)
GB (1) GB2299001B (es)
HK (1) HK1001846A1 (es)
IN (1) IN187842B (es)
IT (1) IT1285305B1 (es)
MX (1) MX9706885A (es)
MY (1) MY119252A (es)
PT (1) PT813736E (es)
RU (1) RU2175454C2 (es)
SE (1) SE520554C2 (es)
WO (1) WO1996028810A1 (es)

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