ES2017906T3 - PROCEDURE AND DEVICE FOR CODING-DE-CODING OF VOICE SIGNALS THROUGH A MULTIPLE PULSE EXCITATION. - Google Patents

PROCEDURE AND DEVICE FOR CODING-DE-CODING OF VOICE SIGNALS THROUGH A MULTIPLE PULSE EXCITATION.

Info

Publication number
ES2017906T3
ES2017906T3 ES89117837T ES89117837T ES2017906T3 ES 2017906 T3 ES2017906 T3 ES 2017906T3 ES 89117837 T ES89117837 T ES 89117837T ES 89117837 T ES89117837 T ES 89117837T ES 2017906 T3 ES2017906 T3 ES 2017906T3
Authority
ES
Spain
Prior art keywords
coding
synthesis
procedure
excitation
term
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
ES89117837T
Other languages
Spanish (es)
Other versions
ES2017906A4 (en
Inventor
Maurizio Omologo
Daniele Sereno
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.)
SIP SAS
Italtel SpA
TIM SpA
Original Assignee
SIP SAS
Italtel SpA
Italtel Societa Italiana Telecomunicazioni SpA
SIP Societa Italiana per lEsercizio delle Telecomunicazioni 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 SIP SAS, Italtel SpA, Italtel Societa Italiana Telecomunicazioni SpA, SIP Societa Italiana per lEsercizio delle Telecomunicazioni SpA filed Critical SIP SAS
Publication of ES2017906A4 publication Critical patent/ES2017906A4/en
Application granted granted Critical
Publication of ES2017906T3 publication Critical patent/ES2017906T3/en
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
    • G10L19/10—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a multipulse excitation

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)
  • Analogue/Digital Conversion (AREA)
  • Dc Digital Transmission (AREA)

Abstract

METODO CODEC QUE UTILIZA UNA TECNICA DE EXCITACION MULTIIMPULSO DE ANALISIS POR SINTESIS. COMPRENDE, EN LA FASE DE DECODIFICACION, FILTROS EN CASCADA DE SINTESIS A LARGO TERMINO Y CORTO TERMINO. EL RETRASO Y GANANCIA DE LOS IMPULSOS DE SINTESIS A LARGO TERMINO Y DE EXCITACION SE DETERMINAN DURANTE LA FASE DE CODIFICACION EN EL PROCEDIMIENTO DE ANALISIS POR SINTESIS EN DOS PASOS SUCESIVOS. EN EL PRIMER PASO SE DETERMINA EL RETRASO Y LA GANANCIA, Y EN EL SEGUNDO LAS POSICIONES Y AMPLITUDES DE LOS IMPULSOS DE EXCITACION. ESTO PERMITE MEJORAR LA CALIDAD A UNA VELOCIDAD DE DATOS DETERMINADA O MANTENER LA CALIDAD REDUCIENDO LA VELOCIDAD DE DATOS. ESTE INVENTO DESCRIBE TAMBIEN EL DISPOSITIVO CORRESPONDIENTE A ESTE METODO.CODEC METHOD USING A MULTI-PULSE EXCITATION TECHNIQUE OF SYNTHESIS ANALYSIS. INCLUDES, IN THE DECODING PHASE, LONG-TERM AND SHORT-TERM SYNTHESIS FILTERS. THE DELAY AND GAIN OF LONG TERM AND EXCITATION SYNTHESIS PULSES ARE DETERMINED DURING THE CODING PHASE IN THE SYNTHESIS ANALYSIS PROCEDURE IN TWO SUCCESSIVE STEPS. IN THE FIRST STEP THE DELAY AND GAIN ARE DETERMINED, AND IN THE SECOND THE POSITIONS AND AMPLITUDES OF THE EXCITATION IMPULSES. THIS ALLOWS TO IMPROVE QUALITY AT A SPECIFIED DATA SPEED OR TO MAINTAIN QUALITY BY REDUCING DATA SPEED. THIS INVENTION ALSO DESCRIBES THE DEVICE CORRESPONDING TO THIS METHOD.

ES89117837T 1988-09-28 1989-09-27 PROCEDURE AND DEVICE FOR CODING-DE-CODING OF VOICE SIGNALS THROUGH A MULTIPLE PULSE EXCITATION. Expired - Lifetime ES2017906T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT67868/88A IT1224453B (en) 1988-09-28 1988-09-28 PROCEDURE AND DEVICE FOR CODING DECODING OF VOICE SIGNALS WITH THE USE OF MULTIPLE PULSE EXCITATION

Publications (2)

Publication Number Publication Date
ES2017906A4 ES2017906A4 (en) 1991-03-16
ES2017906T3 true ES2017906T3 (en) 1994-10-16

Family

ID=11305936

Family Applications (1)

Application Number Title Priority Date Filing Date
ES89117837T Expired - Lifetime ES2017906T3 (en) 1988-09-28 1989-09-27 PROCEDURE AND DEVICE FOR CODING-DE-CODING OF VOICE SIGNALS THROUGH A MULTIPLE PULSE EXCITATION.

Country Status (6)

Country Link
EP (1) EP0361432B1 (en)
AT (1) ATE110180T1 (en)
DE (2) DE361432T1 (en)
ES (1) ES2017906T3 (en)
GR (1) GR900300170T1 (en)
IT (1) IT1224453B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0910064B1 (en) * 1991-02-26 2002-12-18 Nec Corporation Speech parameter coding apparatus
FI98104C (en) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Procedures for generating an excitation vector and digital speech encoder
ES2042410B1 (en) * 1992-04-15 1997-01-01 Control Sys S A ENCODING METHOD AND VOICE ENCODER FOR EQUIPMENT AND COMMUNICATION SYSTEMS.
FI95086C (en) * 1992-11-26 1995-12-11 Nokia Mobile Phones Ltd Method for efficient coding of a speech signal
FI96248C (en) * 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Method for providing a synthetic filter for long-term interval and synthesis filter for speech coder
GB9408037D0 (en) * 1994-04-22 1994-06-15 Philips Electronics Uk Ltd Analogue signal coder

Also Published As

Publication number Publication date
ES2017906A4 (en) 1991-03-16
DE68917552D1 (en) 1994-09-22
IT1224453B (en) 1990-10-04
DE361432T1 (en) 1991-03-21
GR900300170T1 (en) 1991-09-27
EP0361432B1 (en) 1994-08-17
EP0361432A3 (en) 1990-09-26
IT8867868A0 (en) 1988-09-28
EP0361432A2 (en) 1990-04-04
DE68917552T2 (en) 1995-01-12
ATE110180T1 (en) 1994-09-15

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