ES2065871T3 - Procedimiento y dispositivo para la evaluacion del periodo del tono fundamental y la clasificacion de la señal de voz en codificadores numericos de la voz. - Google Patents

Procedimiento y dispositivo para la evaluacion del periodo del tono fundamental y la clasificacion de la señal de voz en codificadores numericos de la voz.

Info

Publication number
ES2065871T3
ES2065871T3 ES94108874T ES94108874T ES2065871T3 ES 2065871 T3 ES2065871 T3 ES 2065871T3 ES 94108874 T ES94108874 T ES 94108874T ES 94108874 T ES94108874 T ES 94108874T ES 2065871 T3 ES2065871 T3 ES 2065871T3
Authority
ES
Spain
Prior art keywords
voice
period
signal
classification
coders
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
ES94108874T
Other languages
English (en)
Other versions
ES2065871T1 (es
Inventor
Luca Cellario
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.)
Telecom Italia SpA
Original Assignee
Telecom Italia SpA
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 Telecom Italia SpA filed Critical Telecom Italia SpA
Publication of ES2065871T1 publication Critical patent/ES2065871T1/es
Application granted granted Critical
Publication of ES2065871T3 publication Critical patent/ES2065871T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/012—Comfort noise or silence coding
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L25/90—Pitch determination of speech signals
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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

Abstract

SE PRESENTA UN METODO Y UN DISPOSITIVO PARA CODIFICAR DIGITALMENTE UNA SEÑAL DE VOZ EN EL QUE EN CADA MARCO SE LLEVA A CABO UN ANALISIS A LARGO PLAZO PARA ESTIMAR EL PERIODO DEL TONO (D) Y UNA PREDICCION A LARGO PLAZO DEL COEFICIENTE (B) Y LA GANANCIA (G), Y UNA CLASIFICACION A PRIORI DE LA SEÑAL COMO ACTIVA/INACTIVA Y, PARA LA SEÑAL ACTIVA, COMO SEÑAL CON VOZ/SIN VOZ. LOS CIRCUITOS DE ESTIMACION DE PERIODO (LT1) COMPUTAN DICHO PERIODO SOBRE LA BASE DE UNA FUNCION DE COVARIANZA ADECUADAMENTE COMPENSADA, Y UN CIRCUITO DE CLASIFICACION (RV) DISTINGUE LAS SEÑALES CON VOZ DE LAS SEÑALES SIN VOZ COMPARANDO UN COEFICIENTE DE PREDICCION A LARGO PLAZO Y LA GANANCIA CON LOS UMBRALES VARIABLES MARCO POR MARCO.
ES94108874T 1993-06-10 1994-06-09 Procedimiento y dispositivo para la evaluacion del periodo del tono fundamental y la clasificacion de la señal de voz en codificadores numericos de la voz. Expired - Lifetime ES2065871T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO930419A IT1270438B (it) 1993-06-10 1993-06-10 Procedimento e dispositivo per la determinazione del periodo del tono fondamentale e la classificazione del segnale vocale in codificatori numerici della voce

Publications (2)

Publication Number Publication Date
ES2065871T1 ES2065871T1 (es) 1995-03-01
ES2065871T3 true ES2065871T3 (es) 1998-10-16

Family

ID=11411549

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94108874T Expired - Lifetime ES2065871T3 (es) 1993-06-10 1994-06-09 Procedimiento y dispositivo para la evaluacion del periodo del tono fundamental y la clasificacion de la señal de voz en codificadores numericos de la voz.

Country Status (10)

Country Link
US (1) US5548680A (es)
EP (1) EP0628947B1 (es)
JP (1) JP3197155B2 (es)
AT (1) ATE170656T1 (es)
CA (1) CA2124643C (es)
DE (2) DE628947T1 (es)
ES (1) ES2065871T3 (es)
FI (1) FI111486B (es)
GR (1) GR950300013T1 (es)
IT (1) IT1270438B (es)

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Also Published As

Publication number Publication date
US5548680A (en) 1996-08-20
ATE170656T1 (de) 1998-09-15
DE69412913T2 (de) 1999-02-18
DE628947T1 (de) 1995-08-03
GR950300013T1 (en) 1995-03-31
CA2124643A1 (en) 1994-12-11
ES2065871T1 (es) 1995-03-01
ITTO930419A0 (it) 1993-06-10
CA2124643C (en) 1998-07-21
EP0628947B1 (en) 1998-09-02
FI942761A (fi) 1994-12-11
IT1270438B (it) 1997-05-05
JP3197155B2 (ja) 2001-08-13
FI942761A0 (fi) 1994-06-10
FI111486B (fi) 2003-07-31
ITTO930419A1 (it) 1994-12-10
EP0628947A1 (en) 1994-12-14
JPH0728499A (ja) 1995-01-31
DE69412913D1 (de) 1998-10-08

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