ES2017906A4 - DEVICE AND METHOD FOR CODING AND DECODING THE CONVERSATION SIGNAL THROUGH MULTI-PULSE EXCITATION. - Google Patents

DEVICE AND METHOD FOR CODING AND DECODING THE CONVERSATION SIGNAL THROUGH MULTI-PULSE EXCITATION.

Info

Publication number
ES2017906A4
ES2017906A4 ES89117837T ES89117837T ES2017906A4 ES 2017906 A4 ES2017906 A4 ES 2017906A4 ES 89117837 T ES89117837 T ES 89117837T ES 89117837 T ES89117837 T ES 89117837T ES 2017906 A4 ES2017906 A4 ES 2017906A4
Authority
ES
Spain
Prior art keywords
coding
decoding
synthesis
term
pulse excitation
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.)
Granted
Application number
ES89117837T
Other languages
Spanish (es)
Other versions
ES2017906T3 (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.)
Italtel SpA
Telecom Italia SpA
Original Assignee
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 Italtel Societa Italiana Telecomunicazioni SpA, SIP Societa Italiana per lEsercizio delle Telecomunicazioni SpA filed Critical Italtel Societa Italiana Telecomunicazioni SpA
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)
  • Dc Digital Transmission (AREA)
  • Analogue/Digital Conversion (AREA)

Abstract

A coding-decoding method using a mulipulse analysis-by-synthesis excitation technique comprises, in the decoding phase, cascaded long-term and short-term synthesis filterings. The lag and gain of the long-term synthesis and the excitation pulses are determined during the coding phase within the analysis-by-synthesis procedure in two subsequent steps, in the first of which the lag and the gain are determined, while in the second the positions and the amplitudes of the excitation pulses are determined. The invention concerns also the device performing the 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 true ES2017906A4 (en) 1991-03-16
ES2017906T3 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) DE68917552T2 (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
DE69232887T2 (en) * 1991-02-26 2003-06-05 Nec Corp., Tokio/Tokyo Speech coding method
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
IT8867868A0 (en) 1988-09-28
DE361432T1 (en) 1991-03-21
DE68917552D1 (en) 1994-09-22
DE68917552T2 (en) 1995-01-12
IT1224453B (en) 1990-10-04
EP0361432B1 (en) 1994-08-17
EP0361432A3 (en) 1990-09-26
GR900300170T1 (en) 1991-09-27
ATE110180T1 (en) 1994-09-15
EP0361432A2 (en) 1990-04-04
ES2017906T3 (en) 1994-10-16

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