EP1355298A3 - CELP Kodierer und Dekodierer - Google Patents

CELP Kodierer und Dekodierer Download PDF

Info

Publication number
EP1355298A3
EP1355298A3 EP03013629A EP03013629A EP1355298A3 EP 1355298 A3 EP1355298 A3 EP 1355298A3 EP 03013629 A EP03013629 A EP 03013629A EP 03013629 A EP03013629 A EP 03013629A EP 1355298 A3 EP1355298 A3 EP 1355298A3
Authority
EP
European Patent Office
Prior art keywords
excitation codebook
codebook
stochastic
excitation
decoder
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
EP03013629A
Other languages
English (en)
French (fr)
Other versions
EP1355298B1 (de
EP1355298A2 (de
Inventor
Kenichiro Hosoda
Hiromi Aoyaki
Hiroshi Katsuragawa
Yoshihiro Ariyama
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
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 Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Priority claimed from EP93913500A external-priority patent/EP0654909A4/de
Priority claimed from PCT/JP1993/000776 external-priority patent/WO1994029965A1/ja
Publication of EP1355298A2 publication Critical patent/EP1355298A2/de
Publication of EP1355298A3 publication Critical patent/EP1355298A3/de
Application granted granted Critical
Publication of EP1355298B1 publication Critical patent/EP1355298B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L19/12—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

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)
EP03013629A 1993-06-10 1993-06-10 CELP Kodierer und Dekodierer Expired - Lifetime EP1355298B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP93913500A EP0654909A4 (de) 1993-06-10 1993-06-10 Celp kodierer und dekodierer.
PCT/JP1993/000776 WO1994029965A1 (en) 1993-06-10 1993-06-10 Code excitation linear prediction encoder and decoder

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP93913500A Division EP0654909A4 (de) 1993-06-10 1993-06-10 Celp kodierer und dekodierer.

Publications (3)

Publication Number Publication Date
EP1355298A2 EP1355298A2 (de) 2003-10-22
EP1355298A3 true EP1355298A3 (de) 2004-02-04
EP1355298B1 EP1355298B1 (de) 2007-02-21

Family

ID=28459643

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03013629A Expired - Lifetime EP1355298B1 (de) 1993-06-10 1993-06-10 CELP Kodierer und Dekodierer

Country Status (1)

Country Link
EP (1) EP1355298B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0718300B1 (pt) * 2006-10-24 2018-08-14 Voiceage Corporation Método e dispositivo para codificar quadros de transição em sinais de fala.
US8463615B2 (en) 2007-07-30 2013-06-11 Google Inc. Low-delay audio coder
EP2023339B1 (de) * 2007-07-30 2010-08-25 Global IP Solutions (GIPS) AB Audiodekoder mit geringer Verzögerung
CN111818519B (zh) * 2020-07-16 2022-02-11 郑州信大捷安信息技术股份有限公司 一种端到端语音加密、解密方法及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462559A2 (de) * 1990-06-18 1991-12-27 Fujitsu Limited System zur Sprachcodierung und -decodierung
EP0476614A2 (de) * 1990-09-18 1992-03-25 Fujitsu Limited Sprachkodierungs- und Dekodierungssystem

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0462559A2 (de) * 1990-06-18 1991-12-27 Fujitsu Limited System zur Sprachcodierung und -decodierung
EP0476614A2 (de) * 1990-09-18 1992-03-25 Fujitsu Limited Sprachkodierungs- und Dekodierungssystem

Also Published As

Publication number Publication date
EP1355298B1 (de) 2007-02-21
EP1355298A2 (de) 2003-10-22

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