EP0361432A3 - Method of and device for speech signal coding and decoding by means of a multipulse excitation - Google Patents

Method of and device for speech signal coding and decoding by means of a multipulse excitation Download PDF

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Publication number
EP0361432A3
EP0361432A3 EP19890117837 EP89117837A EP0361432A3 EP 0361432 A3 EP0361432 A3 EP 0361432A3 EP 19890117837 EP19890117837 EP 19890117837 EP 89117837 A EP89117837 A EP 89117837A EP 0361432 A3 EP0361432 A3 EP 0361432A3
Authority
EP
European Patent Office
Prior art keywords
decoding
synthesis
speech signal
signal coding
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
EP19890117837
Other versions
EP0361432B1 (en
EP0361432A2 (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 EP0361432A2 publication Critical patent/EP0361432A2/en
Publication of EP0361432A3 publication Critical patent/EP0361432A3/en
Application granted granted Critical
Publication of EP0361432B1 publication Critical patent/EP0361432B1/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

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.
EP89117837A 1988-09-28 1989-09-27 Method of and device for speech signal coding and decoding by means of a multipulse excitation Expired - Lifetime EP0361432B1 (en)

Applications Claiming Priority (2)

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
IT6786888 1988-09-28

Publications (3)

Publication Number Publication Date
EP0361432A2 EP0361432A2 (en) 1990-04-04
EP0361432A3 true EP0361432A3 (en) 1990-09-26
EP0361432B1 EP0361432B1 (en) 1994-08-17

Family

ID=11305936

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89117837A Expired - Lifetime EP0361432B1 (en) 1988-09-28 1989-09-27 Method of and device for speech signal coding and decoding by means of a multipulse 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

Non-Patent Citations (5)

* Cited by examiner, † Cited by third party
Title
ELECTRONICS LETTERS, vol. 23, no. 24, 19th November 1987, pages 1286-1288, Hitchin, GB; A. KONDOZ et al.: "Vector-quantised transform coder for speech coding at 9.6kbits/s and below" *
ICASSP 84, IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, San Diego, Calfornia, 19th - 21st March 1984, vol. 1, pages 10.4.1 - 10.4.4, IEEE, New York, US; P. KROON et al.: "Experimental evaluation of different approaches to the multi-pulse coder" *
ICASSP 86, IEEE-IECEJ-ASJ INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, Tokyo, 7th - 11th April 1986, vol. 4, pages 3067-3070, IEEE, New York, US; G. OHYAMA et al.: "A novel approach to estimating excitation code in code-excited linear prediction coding" *
ICASSP 86, IEEE-IECEJ-ASJ INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, Toyko, 7th - 11th April 1986, vol. 3, pages 1689-1692, IEEE, New York, US; K. OZAWA et al.: "High quality multi-pulse speech coder with pitch predicton" *
ICASSP 87, INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING, Dallas, Texas, 6th - 9th April 1987, vol. 3, pages 1649-1652, IEEE, New York, US; P. KROON et al.: "Quantization procedures for the excitation in celp coders" *

Also Published As

Publication number Publication date
IT8867868A0 (en) 1988-09-28
DE361432T1 (en) 1991-03-21
ES2017906A4 (en) 1991-03-16
DE68917552D1 (en) 1994-09-22
DE68917552T2 (en) 1995-01-12
IT1224453B (en) 1990-10-04
EP0361432B1 (en) 1994-08-17
GR900300170T1 (en) 1991-09-27
ATE110180T1 (en) 1994-09-15
EP0361432A2 (en) 1990-04-04
ES2017906T3 (en) 1994-10-16

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