MY106695A - Excitation pulse positioning method in a linear predictive speech coder. - Google Patents

Excitation pulse positioning method in a linear predictive speech coder.

Info

Publication number
MY106695A
MY106695A MYPI90000502A MYPI19900502A MY106695A MY 106695 A MY106695 A MY 106695A MY PI90000502 A MYPI90000502 A MY PI90000502A MY PI19900502 A MYPI19900502 A MY PI19900502A MY 106695 A MY106695 A MY 106695A
Authority
MY
Malaysia
Prior art keywords
pulse
pulses
linear predictive
phase
excitation pulse
Prior art date
Application number
MYPI90000502A
Inventor
Bjorn Minde Tor
Original Assignee
Ericsson Telefon Ab L M
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
Priority claimed from SE8901697A external-priority patent/SE463691B/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of MY106695A publication Critical patent/MY106695A/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
    • 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)

Abstract

A METHOD FOR POSITIONING EXCITATION PULSES FOR A LINEAR PREDICTIVE CODER (LPC) OPERATING ACCORDING TO THE MULTI- PULSE PRINCIPLE, I.E. A NUMBER OF SUCH PULSES ARE POSITIONED AT SPECIFIC TIME POINTS AND WITH SPECIFIC AMPLITUDE. THE TIME POINTS AND THE AMPLITUDES ARE DETERMINED FROM THE PREDICTIVE PARAMETERS (AK) AND THE PREDICTIVE RESIDUE SIGNAL (DK) BY CORRELATION BETWEEN A SPEECH REPRESENTATIVE SIGNAL (Y) AND A COMPOSED SYNTHESIZED SIGNAL (Y). THIS CAN PROVIDE ALL POSSIBLE TIME POSITIONS FOR THE EXCITATION PULSES WITHIN A GIVEN FRAME INTERVAL. ACCORDING TO THE PROPOSED METHOD, THE POSSIBLE TIME POSITIONS ARE DIVIDED INTO A NUMBER (NF) OF PHASE POSITIONS AND EACH PHASE-POSITION IS DIVIDED INTO A NUMBER OF PHASES (F). THESE PHASES ARE VACANT FOR THE FIRST EXCITATION PULSE. WHEN THIS PULSE HAS BEEN POSITIONED, THE PHASE DETERMINED FOR THIS PULSE IS DENIED TO THE FOLLOWING EXCITATION PULSES UNTIL ALL PULSES IN A FRAME HAVE BEEN POSITIONED.(FIG. 5)
MYPI90000502A 1989-05-11 1990-03-30 Excitation pulse positioning method in a linear predictive speech coder. MY106695A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8901697A SE463691B (en) 1989-05-11 1989-05-11 PROCEDURE TO DEPLOY EXCITATION PULSE FOR A LINEAR PREDICTIVE ENCODER (LPC) WORKING ON THE MULTIPULAR PRINCIPLE

Publications (1)

Publication Number Publication Date
MY106695A true MY106695A (en) 1995-07-31

Family

ID=58231222

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI90000502A MY106695A (en) 1989-05-11 1990-03-30 Excitation pulse positioning method in a linear predictive speech coder.

Country Status (3)

Country Link
KR (1) KR950014107B1 (en)
MY (1) MY106695A (en)
SA (1) SA90110060B1 (en)

Also Published As

Publication number Publication date
KR950014107B1 (en) 1995-11-21
SA90110060B1 (en) 2004-07-24
KR920700439A (en) 1992-02-19

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