DE68917552T2 - Method and device for coding and decoding speech signals using multipulse excitation. - Google Patents

Method and device for coding and decoding speech signals using multipulse excitation.

Info

Publication number
DE68917552T2
DE68917552T2 DE68917552T DE68917552T DE68917552T2 DE 68917552 T2 DE68917552 T2 DE 68917552T2 DE 68917552 T DE68917552 T DE 68917552T DE 68917552 T DE68917552 T DE 68917552T DE 68917552 T2 DE68917552 T2 DE 68917552T2
Authority
DE
Germany
Prior art keywords
coding
synthesis
speech signals
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 - Fee Related
Application number
DE68917552T
Other languages
German (de)
Other versions
DE68917552D1 (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
Original Assignee
SIP SAS
Italtel SpA
Italtel Societa Italiana 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 filed Critical SIP SAS
Publication of DE68917552D1 publication Critical patent/DE68917552D1/en
Application granted granted Critical
Publication of DE68917552T2 publication Critical patent/DE68917552T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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.
DE68917552T 1988-09-28 1989-09-27 Method and device for coding and decoding speech signals using multipulse excitation. Expired - Fee Related DE68917552T2 (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
DE68917552D1 DE68917552D1 (en) 1994-09-22
DE68917552T2 true DE68917552T2 (en) 1995-01-12

Family

ID=11305936

Family Applications (2)

Application Number Title Priority Date Filing Date
DE198989117837T Pending DE361432T1 (en) 1988-09-28 1989-09-27 METHOD AND DEVICE FOR CODING AND DECODING VOICE SIGNALS USING MULTIPULES EXCITATION.
DE68917552T Expired - Fee Related DE68917552T2 (en) 1988-09-28 1989-09-27 Method and device for coding and decoding speech signals using multipulse excitation.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE198989117837T Pending DE361432T1 (en) 1988-09-28 1989-09-27 METHOD AND DEVICE FOR CODING AND DECODING VOICE SIGNALS USING MULTIPULES 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
DE69232887T2 (en) * 1991-02-26 2003-06-05 Nec Corp 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
DE68917552D1 (en) 1994-09-22
ES2017906A4 (en) 1991-03-16
DE361432T1 (en) 1991-03-21
ATE110180T1 (en) 1994-09-15
EP0361432B1 (en) 1994-08-17
ES2017906T3 (en) 1994-10-16
IT8867868A0 (en) 1988-09-28
GR900300170T1 (en) 1991-09-27
IT1224453B (en) 1990-10-04
EP0361432A2 (en) 1990-04-04
EP0361432A3 (en) 1990-09-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee