CA2006487A1 - Systeme de communication pouvant ameliorer la qualite des signaux vocaux en calculant les caracteristiques des impulsions d'excitation - Google Patents

Systeme de communication pouvant ameliorer la qualite des signaux vocaux en calculant les caracteristiques des impulsions d'excitation

Info

Publication number
CA2006487A1
CA2006487A1 CA2006487A CA2006487A CA2006487A1 CA 2006487 A1 CA2006487 A1 CA 2006487A1 CA 2006487 A CA2006487 A CA 2006487A CA 2006487 A CA2006487 A CA 2006487A CA 2006487 A1 CA2006487 A1 CA 2006487A1
Authority
CA
Canada
Prior art keywords
sound
signals
sound source
judged signal
representative
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
CA2006487A
Other languages
English (en)
Other versions
CA2006487C (fr
Inventor
Kazunori Ozawa
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.)
NEC 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
Priority claimed from JP63326805A external-priority patent/JPH02170199A/ja
Priority claimed from JP1001849A external-priority patent/JPH02181800A/ja
Application filed by Individual filed Critical Individual
Publication of CA2006487A1 publication Critical patent/CA2006487A1/fr
Application granted granted Critical
Publication of CA2006487C publication Critical patent/CA2006487C/fr
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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
CA002006487A 1988-12-23 1989-12-22 Systeme de communication pouvant ameliorer la qualite des signaux vocaux en calculant les caracteristiques des impulsions d'excitation Expired - Fee Related CA2006487C (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP326805/1988 1988-12-23
JP63326805A JPH02170199A (ja) 1988-12-23 1988-12-23 音声符号化復号化方式
JP1849/1989 1989-01-06
JP1001849A JPH02181800A (ja) 1989-01-06 1989-01-06 音声符号化復号化方式

Publications (2)

Publication Number Publication Date
CA2006487A1 true CA2006487A1 (fr) 1990-06-23
CA2006487C CA2006487C (fr) 1994-01-11

Family

ID=26335140

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002006487A Expired - Fee Related CA2006487C (fr) 1988-12-23 1989-12-22 Systeme de communication pouvant ameliorer la qualite des signaux vocaux en calculant les caracteristiques des impulsions d'excitation

Country Status (4)

Country Link
US (1) US5091946A (fr)
EP (1) EP0374941B1 (fr)
CA (1) CA2006487C (fr)
DE (1) DE68923771T2 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230038A (en) * 1989-01-27 1993-07-20 Fielder Louis D Low bit rate transform coder, decoder, and encoder/decoder for high-quality audio
EP0402947B1 (fr) * 1989-06-14 1997-11-26 Nec Corporation Procédé et dispositif de codage de la parole utilisant une suite régulière d'impulsions d'excitation
CA2051304C (fr) * 1990-09-18 1996-03-05 Tomohiko Taniguchi Systeme de codage et de decodage de paroles
FR2668288B1 (fr) * 1990-10-19 1993-01-15 Di Francesco Renaud Procede de transmission, a bas debit, par codage celp d'un signal de parole et systeme correspondant.
CA2084323C (fr) * 1991-12-03 1996-12-03 Tetsu Taguchi Systeme de codage de signaux vocaux pouvant transmettre un signal vocal a un faible debit
JPH05307399A (ja) * 1992-05-01 1993-11-19 Sony Corp 音声分析方式
JP2655046B2 (ja) * 1993-09-13 1997-09-17 日本電気株式会社 ベクトル量子化装置
US5574825A (en) * 1994-03-14 1996-11-12 Lucent Technologies Inc. Linear prediction coefficient generation during frame erasure or packet loss
AU696092B2 (en) * 1995-01-12 1998-09-03 Digital Voice Systems, Inc. Estimation of excitation parameters
JP2778567B2 (ja) * 1995-12-23 1998-07-23 日本電気株式会社 信号符号化装置及び方法
GB2312360B (en) * 1996-04-12 2001-01-24 Olympus Optical Co Voice signal coding apparatus
JP3618217B2 (ja) * 1998-02-26 2005-02-09 パイオニア株式会社 音声のピッチ符号化方法及び音声のピッチ符号化装置並びに音声のピッチ符号化プログラムが記録された記録媒体
US6304842B1 (en) * 1999-06-30 2001-10-16 Glenayre Electronics, Inc. Location and coding of unvoiced plosives in linear predictive coding of speech
US7630396B2 (en) * 2004-08-26 2009-12-08 Panasonic Corporation Multichannel signal coding equipment and multichannel signal decoding equipment
CN100466600C (zh) * 2005-03-08 2009-03-04 华为技术有限公司 下一代网络中实现接入配置模式资源预留的方法
JPWO2008007616A1 (ja) * 2006-07-13 2009-12-10 日本電気株式会社 無音声発声の入力警告装置と方法並びにプログラム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0632032B2 (ja) * 1984-03-06 1994-04-27 日本電気株式会社 音声帯域信号符号化方法とその装置
JPH0683149B2 (ja) * 1984-04-04 1994-10-19 日本電気株式会社 音声帯域信号符号化・復号化装置
US4797926A (en) * 1986-09-11 1989-01-10 American Telephone And Telegraph Company, At&T Bell Laboratories Digital speech vocoder
JP2586043B2 (ja) * 1987-05-14 1997-02-26 日本電気株式会社 マルチパルス符号化装置

Also Published As

Publication number Publication date
DE68923771T2 (de) 1995-12-14
DE68923771D1 (de) 1995-09-14
US5091946A (en) 1992-02-25
EP0374941A3 (fr) 1991-10-16
EP0374941B1 (fr) 1995-08-09
EP0374941A2 (fr) 1990-06-27
CA2006487C (fr) 1994-01-11

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