DE69126062T2 - System zur Sprachcodierung und -decodierung - Google Patents

System zur Sprachcodierung und -decodierung

Info

Publication number
DE69126062T2
DE69126062T2 DE69126062T DE69126062T DE69126062T2 DE 69126062 T2 DE69126062 T2 DE 69126062T2 DE 69126062 T DE69126062 T DE 69126062T DE 69126062 T DE69126062 T DE 69126062T DE 69126062 T2 DE69126062 T2 DE 69126062T2
Authority
DE
Germany
Prior art keywords
vector
optimum
decoding system
coding
speech coding
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 - Fee Related
Application number
DE69126062T
Other languages
English (en)
Other versions
DE69126062D1 (de
Inventor
Tomohiko Taniguchi
Mark Johnson
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE69126062D1 publication Critical patent/DE69126062D1/de
Application granted granted Critical
Publication of DE69126062T2 publication Critical patent/DE69126062T2/de
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
    • G10L19/12—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
    • 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
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain
    • 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
    • G10L2019/0003—Backward prediction of gain
    • 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
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/27—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the analysis technique

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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69126062T 1990-06-18 1991-06-18 System zur Sprachcodierung und -decodierung Expired - Fee Related DE69126062T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2161041A JPH0451199A (ja) 1990-06-18 1990-06-18 音声符号化・復号化方式

Publications (2)

Publication Number Publication Date
DE69126062D1 DE69126062D1 (de) 1997-06-19
DE69126062T2 true DE69126062T2 (de) 1997-10-09

Family

ID=15727475

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69126062T Expired - Fee Related DE69126062T2 (de) 1990-06-18 1991-06-18 System zur Sprachcodierung und -decodierung

Country Status (5)

Country Link
US (1) US5799131A (de)
EP (1) EP0462559B1 (de)
JP (1) JPH0451199A (de)
CA (1) CA2044750C (de)
DE (1) DE69126062T2 (de)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2776050B2 (ja) * 1991-02-26 1998-07-16 日本電気株式会社 音声符号化方式
FI98104C (fi) * 1991-05-20 1997-04-10 Nokia Mobile Phones Ltd Menetelmä herätevektorin generoimiseksi ja digitaalinen puhekooderi
US5396576A (en) * 1991-05-22 1995-03-07 Nippon Telegraph And Telephone Corporation Speech coding and decoding methods using adaptive and random code books
FR2700632B1 (fr) * 1993-01-21 1995-03-24 France Telecom Système de codage-décodage prédictif d'un signal numérique de parole par transformée adaptative à codes imbriqués.
JP2746039B2 (ja) * 1993-01-22 1998-04-28 日本電気株式会社 音声符号化方式
EP1355298B1 (de) * 1993-06-10 2007-02-21 Oki Electric Industry Company, Limited CELP Kodierer und Dekodierer
SG43128A1 (en) * 1993-06-10 1997-10-17 Oki Electric Ind Co Ltd Code excitation linear predictive (celp) encoder and decoder
WO1994029965A1 (fr) * 1993-06-10 1994-12-22 Oki Electric Industry Co., Ltd. Codeur-decodeur predictif lineaire a excitation par codes
JP3321976B2 (ja) * 1994-04-01 2002-09-09 富士通株式会社 信号処理装置および信号処理方法
JP3328080B2 (ja) * 1994-11-22 2002-09-24 沖電気工業株式会社 コード励振線形予測復号器
US5751903A (en) * 1994-12-19 1998-05-12 Hughes Electronics Low rate multi-mode CELP codec that encodes line SPECTRAL frequencies utilizing an offset
JP3707154B2 (ja) * 1996-09-24 2005-10-19 ソニー株式会社 音声符号化方法及び装置
TW408298B (en) * 1997-08-28 2000-10-11 Texas Instruments Inc Improved method for switched-predictive quantization
GB2338630B (en) * 1998-06-20 2000-07-26 Motorola Ltd Speech decoder and method of operation
US7072832B1 (en) * 1998-08-24 2006-07-04 Mindspeed Technologies, Inc. System for speech encoding having an adaptive encoding arrangement
US6959274B1 (en) 1999-09-22 2005-10-25 Mindspeed Technologies, Inc. Fixed rate speech compression system and method
DE60126149T8 (de) * 2000-11-27 2008-01-31 Nippon Telegraph And Telephone Corp. Verfahren, einrichtung und programm zum codieren und decodieren eines akustischen parameters und verfahren, einrichtung und programm zum codieren und decodieren von klängen
US7778826B2 (en) * 2005-01-13 2010-08-17 Intel Corporation Beamforming codebook generation system and associated methods
DK2975611T3 (en) * 2011-03-10 2018-04-03 Ericsson Telefon Ab L M FILLING OF UNCODED SUBVECTORS IN TRANSFORM CODED AUDIO SIGNALS
CN113948085B (zh) * 2021-12-22 2022-03-25 中国科学院自动化研究所 语音识别方法、系统、电子设备和存储介质

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1252568A (en) * 1984-12-24 1989-04-11 Kazunori Ozawa Low bit-rate pattern encoding and decoding capable of reducing an information transmission rate
US4899385A (en) * 1987-06-26 1990-02-06 American Telephone And Telegraph Company Code excited linear predictive vocoder
US4896361A (en) * 1988-01-07 1990-01-23 Motorola, Inc. Digital speech coder having improved vector excitation source
IL94119A (en) * 1989-06-23 1996-06-18 Motorola Inc Digital voice recorder

Also Published As

Publication number Publication date
DE69126062D1 (de) 1997-06-19
EP0462559A3 (en) 1992-08-05
US5799131A (en) 1998-08-25
EP0462559A2 (de) 1991-12-27
JPH0451199A (ja) 1992-02-19
CA2044750C (en) 1996-03-05
CA2044750A1 (en) 1991-12-19
EP0462559B1 (de) 1997-05-14

Similar Documents

Publication Publication Date Title
DE69126062T2 (de) System zur Sprachcodierung und -decodierung
ATE233008T1 (de) System zur sprachkodierung
EP2154680A3 (de) Verfahren und Vorrichtung zur Sprachkodierung
JPS6440899A (en) Cord excitation linearity prediction vocoder using false search
EP0770990A3 (de) Verfahren und Vorrichtung zur Sprachkodierung und -dekodierung
SG43428A1 (en) Speech encoding method and apparatus
FI934424A (fi) Tid-frekvens -interpolering med tillaempning pao laoghastighets talkodning
KR960016291A (ko) 코딩 시스템의 성능을 증대시키기 위한 방법 및 디코더 프리프로세서
DE69232892D1 (de) Sprachkodierungssystem
DE69129385D1 (de) Sprachkodiersystem
DE69128407T2 (de) Verfahren und Einrichtung zur Übertragung mit niedriger Bitrate eines Sprachsignals mittels CELP-Codierung
EP1041541A4 (de) Celp sprachkodierer
DE69703233T2 (de) Verfahren und Systeme zur Sprachkodierung
CA2090205A1 (en) Speech coding system
EP1355298A3 (de) CELP Kodierer und Dekodierer
CA2170007A1 (en) Determination of Gain for Pitch Period in Coding of Speech Signal
KR970031381A (ko) 코드 여기 선형 예측 부호화의 잡음 코드북 작성 방법

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee