CA2026640A1 - Speech analysis-synthesis method and apparatus therefor - Google Patents

Speech analysis-synthesis method and apparatus therefor

Info

Publication number
CA2026640A1
CA2026640A1 CA2026640A CA2026640A CA2026640A1 CA 2026640 A1 CA2026640 A1 CA 2026640A1 CA 2026640 A CA2026640 A CA 2026640A CA 2026640 A CA2026640 A CA 2026640A CA 2026640 A1 CA2026640 A1 CA 2026640A1
Authority
CA
Canada
Prior art keywords
impulse sequence
speech
quasi
phase
filter
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
CA2026640A
Other languages
French (fr)
Other versions
CA2026640C (en
Inventor
Masaaki Honda
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2026640A1 publication Critical patent/CA2026640A1/en
Application granted granted Critical
Publication of CA2026640C publication Critical patent/CA2026640C/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

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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)

Abstract

An impulse sequence of a pitch frequency is detected from a phase-equalized prediction residual of an input speech signal, and a quasi-periodic impulse sequence is obtained by processing the impulse sequence so that a fluctuation in its pitch frequency is within an allowed limit range. The magnitudes of the quasi-periodic impulse sequence are so determined as to minimize an error between the waveform of a synthesized speech obtainable by exciting an all-pole filter with the quasi-periodic impulse sequence and the waveform of a phase-equalized speech obtainable by applying the input speech signal to a phase equalizing filter. Preferably, the quasi-periodic impulse sequence is supplied to the all-pole filter after being applied to a zero filter in which it is given features of the prediction residual of the speech. Coefficients of the zero filter are also determined so that the error of the waveforms of the synthesized speech and the phase-equalized speech is minimum.
CA002026640A 1989-10-02 1990-10-01 Speech analysis-synthesis method and apparatus therefor Expired - Fee Related CA2026640C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP257503/89 1989-10-02
JP1257503A JPH0782360B2 (en) 1989-10-02 1989-10-02 Speech analysis and synthesis method

Publications (2)

Publication Number Publication Date
CA2026640A1 true CA2026640A1 (en) 1991-04-03
CA2026640C CA2026640C (en) 1996-07-09

Family

ID=17307200

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002026640A Expired - Fee Related CA2026640C (en) 1989-10-02 1990-10-01 Speech analysis-synthesis method and apparatus therefor

Country Status (4)

Country Link
EP (1) EP0421360B1 (en)
JP (1) JPH0782360B2 (en)
CA (1) CA2026640C (en)
DE (1) DE69024899T2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2741744B1 (en) * 1995-11-23 1998-01-02 Thomson Csf METHOD AND DEVICE FOR EVALUATING THE ENERGY OF THE SPEAKING SIGNAL BY SUBBAND FOR LOW-FLOW VOCODER
EP1008982B1 (en) * 1997-03-12 2005-12-07 Mitsubishi Denki Kabushiki Kaisha Voice encoder, voice decoder, voice encoder/decoder, voice encoding method, voice decoding method and voice encoding/decoding method
US7072832B1 (en) 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
US6385573B1 (en) 1998-08-24 2002-05-07 Conexant Systems, Inc. Adaptive tilt compensation for synthesized speech residual
JP4999757B2 (en) * 2008-03-31 2012-08-15 日本電信電話株式会社 Speech analysis / synthesis apparatus, speech analysis / synthesis method, computer program, and recording medium
JP5325130B2 (en) * 2010-01-25 2013-10-23 日本電信電話株式会社 LPC analysis device, LPC analysis method, speech analysis / synthesis device, speech analysis / synthesis method, and program
CN108281150B (en) * 2018-01-29 2020-11-17 上海泰亿格康复医疗科技股份有限公司 Voice tone-changing voice-changing method based on differential glottal wave model
CN113066476B (en) * 2019-12-13 2024-05-31 科大讯飞股份有限公司 Synthetic voice processing method and related device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0163829B1 (en) * 1984-03-21 1989-08-23 Nippon Telegraph And Telephone Corporation Speech signal processing system

Also Published As

Publication number Publication date
DE69024899D1 (en) 1996-02-29
EP0421360B1 (en) 1996-01-17
DE69024899T2 (en) 1996-07-04
EP0421360A3 (en) 1991-12-27
JPH0782360B2 (en) 1995-09-06
EP0421360A2 (en) 1991-04-10
CA2026640C (en) 1996-07-09
JPH03119398A (en) 1991-05-21

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