GR900300170T1 - 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

Info

Publication number
GR900300170T1
GR900300170T1 GR90300170T GR900300170T GR900300170T1 GR 900300170 T1 GR900300170 T1 GR 900300170T1 GR 90300170 T GR90300170 T GR 90300170T GR 900300170 T GR900300170 T GR 900300170T GR 900300170 T1 GR900300170 T1 GR 900300170T1
Authority
GR
Greece
Prior art keywords
decoding
synthesis
speech signal
signal coding
excitation
Prior art date
Application number
GR90300170T
Other languages
Greek (el)
Inventor
Maurizio Omologo
Daniele Sereno
Original Assignee
Sip
Italtel 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, Italtel Spa filed Critical Sip
Publication of GR900300170T1 publication Critical patent/GR900300170T1/en

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.
GR90300170T 1988-09-28 1991-09-27 Method of and device for speech signal coding and decoding by means of a multipulse excitation GR900300170T1 (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 (1)

Publication Number Publication Date
GR900300170T1 true GR900300170T1 (en) 1991-09-27

Family

ID=11305936

Family Applications (1)

Application Number Title Priority Date Filing Date
GR90300170T GR900300170T1 (en) 1988-09-28 1991-09-27 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 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
EP0361432A2 (en) 1990-04-04
DE361432T1 (en) 1991-03-21
ES2017906T3 (en) 1994-10-16
DE68917552T2 (en) 1995-01-12
ES2017906A4 (en) 1991-03-16
EP0361432A3 (en) 1990-09-26
DE68917552D1 (en) 1994-09-22
ATE110180T1 (en) 1994-09-15
EP0361432B1 (en) 1994-08-17
IT1224453B (en) 1990-10-04

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