ES2163589T3 - Clasificacion de voz sonora/no sonora para uso en descodificacion de voz en caso de borrados de tramas. - Google Patents

Clasificacion de voz sonora/no sonora para uso en descodificacion de voz en caso de borrados de tramas.

Info

Publication number
ES2163589T3
ES2163589T3 ES96303797T ES96303797T ES2163589T3 ES 2163589 T3 ES2163589 T3 ES 2163589T3 ES 96303797 T ES96303797 T ES 96303797T ES 96303797 T ES96303797 T ES 96303797T ES 2163589 T3 ES2163589 T3 ES 2163589T3
Authority
ES
Spain
Prior art keywords
voice
sound
sign
periodic
output
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
ES96303797T
Other languages
English (en)
Inventor
Peter Kroon
Yair Shoham
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.)
AT&T Corp
Original Assignee
AT&T Corp
AT&T IPM Corp
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 AT&T Corp, AT&T IPM Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of ES2163589T3 publication Critical patent/ES2163589T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
    • 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
    • G10L2019/0003—Backward prediction of gain
    • 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
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
    • G10L2025/932—Decision in previous or following frames

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

UN DECODIFICADOR DE VOZ INCLUYE UNA PRIMERA PARTE QUE COMPRENDE UN CODIGO DE CIFRADO Y DESCIFRADO ADAPTATIVO Y UNA SEGUNDA PARTE QUE COMPRENDE UN CODIGO DE CIFRADO Y DESCIFRADO FIJO. EL DECODIFICADOR GENERA UN SEÑAL DE EXCITACION DE VOZ DE FORMA SELECTIVA EN BASE A LAS SEÑALES DE SALIDA DE DICHAS PRIMERA Y SEGUNDA PARTE CUANDO DICHO DECODIFICADOR FALLA PARA RECIBIR AL MENOS UNA PARTE DE UN MARCO ACTUAL DE INFORMACION DE VOZ COMPRIMIDA. EL DECODIFICADOR HACE ESTO CLASIFICANDO LA SEÑAL DE VOZ A GENERAR COMO PERIODICA O NO PERIODICA Y GENERANDO ENTONCES UNA SEÑAL DE EXCITACION BASADA EN ESTA CLASIFICACION. SI LA SEÑAL DE VOZ SE CLASIFICA COMO PERIODICA, LA SEÑAL DE EXCITACION SE GENERA EN BASE A LA SEÑAL DE SALIDA DE LA PRIMERA PARTE Y NO EN BASE A LA SEÑAL DE SALIDA DE LA SEGUNDA PARTE. SI LA SEÑAL DE VOZ SE CLASIFICA COMO NO PERIODICA, SE GENERA LA SEÑAL DE EXCITACION EN BASE A LA SALIDA DE DICHA SEGUNDA PARTE Y NO EN BASE A LA SALIDA DE DICHA PRIMERA PARTE.
ES96303797T 1995-06-07 1996-05-29 Clasificacion de voz sonora/no sonora para uso en descodificacion de voz en caso de borrados de tramas. Expired - Lifetime ES2163589T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/482,708 US5732389A (en) 1995-06-07 1995-06-07 Voiced/unvoiced classification of speech for excitation codebook selection in celp speech decoding during frame erasures

Publications (1)

Publication Number Publication Date
ES2163589T3 true ES2163589T3 (es) 2002-02-01

Family

ID=23917119

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96303797T Expired - Lifetime ES2163589T3 (es) 1995-06-07 1996-05-29 Clasificacion de voz sonora/no sonora para uso en descodificacion de voz en caso de borrados de tramas.

Country Status (8)

Country Link
US (1) US5732389A (es)
EP (1) EP0747883B1 (es)
JP (1) JPH09120298A (es)
KR (1) KR100389178B1 (es)
AU (1) AU5464996A (es)
CA (1) CA2177422C (es)
DE (1) DE69613908T2 (es)
ES (1) ES2163589T3 (es)

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Also Published As

Publication number Publication date
KR970004467A (ko) 1997-01-29
EP0747883B1 (en) 2001-07-18
DE69613908D1 (de) 2001-08-23
DE69613908T2 (de) 2002-04-04
EP0747883A2 (en) 1996-12-11
CA2177422A1 (en) 1996-12-08
EP0747883A3 (en) 1997-09-17
JPH09120298A (ja) 1997-05-06
AU5464996A (en) 1996-12-19
CA2177422C (en) 2000-08-22
MX9602142A (es) 1997-09-30
US5732389A (en) 1998-03-24
KR100389178B1 (ko) 2003-09-02

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