CA2060310C - Codeur de paroles numerique a qualite vocale amelioree utilisant une source d'excitation vectorielle - Google Patents

Codeur de paroles numerique a qualite vocale amelioree utilisant une source d'excitation vectorielle Download PDF

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Publication number
CA2060310C
CA2060310C CA002060310A CA2060310A CA2060310C CA 2060310 C CA2060310 C CA 2060310C CA 002060310 A CA002060310 A CA 002060310A CA 2060310 A CA2060310 A CA 2060310A CA 2060310 C CA2060310 C CA 2060310C
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CA
Canada
Prior art keywords
excitation
excitation signal
signal
candidate
pitch
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 - Lifetime
Application number
CA002060310A
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English (en)
Other versions
CA2060310A1 (fr
Inventor
Ira Alan Gerson
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of CA2060310A1 publication Critical patent/CA2060310A1/fr
Application granted granted Critical
Publication of CA2060310C publication Critical patent/CA2060310C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L13/00—Speech synthesis; Text to speech systems
    • 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
    • G10L19/12—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being a code excitation, e.g. in code excited linear prediction [CELP] vocoders
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0004—Design or structure of the codebook
    • G10L2019/0005—Multi-stage vector quantisation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0011—Long term prediction filters, i.e. pitch estimation
    • 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
    • G10L2019/0001—Codebooks
    • G10L2019/0013—Codebook search algorithms

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Analogue/Digital Conversion (AREA)
CA002060310A 1989-06-23 1990-05-02 Codeur de paroles numerique a qualite vocale amelioree utilisant une source d'excitation vectorielle Expired - Lifetime CA2060310C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US37054189A 1989-06-23 1989-06-23
US370,541 1989-06-23
PCT/US1990/002469 WO1991001545A1 (fr) 1989-06-23 1990-05-02 Codeur vocal numerique a source d'excitation vectorielle de qualite vocale amelioree

Publications (2)

Publication Number Publication Date
CA2060310A1 CA2060310A1 (fr) 1990-12-24
CA2060310C true CA2060310C (fr) 2001-07-17

Family

ID=23460115

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002060310A Expired - Lifetime CA2060310C (fr) 1989-06-23 1990-05-02 Codeur de paroles numerique a qualite vocale amelioree utilisant une source d'excitation vectorielle

Country Status (10)

Country Link
EP (1) EP0484339B1 (fr)
KR (1) KR950003557B1 (fr)
CN (1) CN1023160C (fr)
AU (1) AU638462B2 (fr)
BR (1) BR9007467A (fr)
CA (1) CA2060310C (fr)
DE (1) DE69032026T2 (fr)
IL (1) IL94119A (fr)
NZ (1) NZ234180A (fr)
WO (1) WO1991001545A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0451199A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化・復号化方式
JPH0451200A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化方式
IT1241358B (it) * 1990-12-20 1994-01-10 Sip Sistema di codifica del segnale vocale con sottocodice annidato
JP2776050B2 (ja) * 1991-02-26 1998-07-16 日本電気株式会社 音声符号化方式
DE4315315A1 (de) * 1993-05-07 1994-11-10 Ant Nachrichtentech Verfahren zur Vektorquantisierung insbesondere von Sprachsignalen
EP0654909A4 (fr) * 1993-06-10 1997-09-10 Oki Electric Ind Co Ltd Codeur-decodeur predictif lineaire a excitation par codes.
JP3224955B2 (ja) * 1994-05-27 2001-11-05 株式会社東芝 ベクトル量子化装置およびベクトル量子化方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1252568A (fr) * 1984-12-24 1989-04-11 Kazunori Ozawa Codeur et decodeur de signaux a faible debit binaire pouvant reduire la vitesse de transmission de l'information
US4868867A (en) * 1987-04-06 1989-09-19 Voicecraft Inc. Vector excitation speech or audio coder for transmission or storage
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder

Also Published As

Publication number Publication date
EP0484339A1 (fr) 1992-05-13
DE69032026D1 (de) 1998-03-12
IL94119A0 (en) 1991-01-31
NZ234180A (en) 1993-11-25
CN1023160C (zh) 1993-12-15
AU638462B2 (en) 1993-07-01
IL94119A (en) 1996-06-18
CA2060310A1 (fr) 1990-12-24
CN1048278A (zh) 1991-01-02
KR920702787A (ko) 1992-10-06
DE69032026T2 (de) 1998-09-17
WO1991001545A1 (fr) 1991-02-07
AU5735990A (en) 1991-02-22
EP0484339A4 (en) 1993-05-05
KR950003557B1 (ko) 1995-04-14
BR9007467A (pt) 1992-06-16
EP0484339B1 (fr) 1998-02-04

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