DE69519896D1 - Verfahren und Vorrichtung zur Kodierung eines Anregungssignals - Google Patents

Verfahren und Vorrichtung zur Kodierung eines Anregungssignals

Info

Publication number
DE69519896D1
DE69519896D1 DE69519896T DE69519896T DE69519896D1 DE 69519896 D1 DE69519896 D1 DE 69519896D1 DE 69519896 T DE69519896 T DE 69519896T DE 69519896 T DE69519896 T DE 69519896T DE 69519896 D1 DE69519896 D1 DE 69519896D1
Authority
DE
Germany
Prior art keywords
coding
excitation signal
excitation
signal
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
DE69519896T
Other languages
English (en)
Other versions
DE69519896T2 (de
Inventor
Masahiro Serizawa
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
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of DE69519896D1 publication Critical patent/DE69519896D1/de
Application granted granted Critical
Publication of DE69519896T2 publication Critical patent/DE69519896T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
DE69519896T 1994-06-21 1995-06-20 Verfahren und Vorrichtung zur Kodierung eines Anregungssignals Expired - Fee Related DE69519896T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6138845A JP2970407B2 (ja) 1994-06-21 1994-06-21 音声の励振信号符号化装置

Publications (2)

Publication Number Publication Date
DE69519896D1 true DE69519896D1 (de) 2001-02-22
DE69519896T2 DE69519896T2 (de) 2001-08-30

Family

ID=15231532

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69519896T Expired - Fee Related DE69519896T2 (de) 1994-06-21 1995-06-20 Verfahren und Vorrichtung zur Kodierung eines Anregungssignals

Country Status (5)

Country Link
US (1) US5687284A (de)
EP (1) EP0689195B1 (de)
JP (1) JP2970407B2 (de)
CA (1) CA2152513C (de)
DE (1) DE69519896T2 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3273455B2 (ja) * 1994-10-07 2002-04-08 日本電信電話株式会社 ベクトル量子化方法及びその復号化器
SE508788C2 (sv) * 1995-04-12 1998-11-02 Ericsson Telefon Ab L M Förfarande att bestämma positionerna inom en talram för excitationspulser
FR2734389B1 (fr) * 1995-05-17 1997-07-18 Proust Stephane Procede d'adaptation du niveau de masquage du bruit dans un codeur de parole a analyse par synthese utilisant un filtre de ponderation perceptuelle a court terme
US5819213A (en) * 1996-01-31 1998-10-06 Kabushiki Kaisha Toshiba Speech encoding and decoding with pitch filter range unrestricted by codebook range and preselecting, then increasing, search candidates from linear overlap codebooks
JPH09281995A (ja) * 1996-04-12 1997-10-31 Nec Corp 信号符号化装置及び方法
US5987406A (en) * 1997-04-07 1999-11-16 Universite De Sherbrooke Instability eradication for analysis-by-synthesis speech codecs
US5893060A (en) * 1997-04-07 1999-04-06 Universite De Sherbrooke Method and device for eradicating instability due to periodic signals in analysis-by-synthesis speech codecs
US7133823B2 (en) * 2000-09-15 2006-11-07 Mindspeed Technologies, Inc. System for an adaptive excitation pattern for speech coding
US7054807B2 (en) 2002-11-08 2006-05-30 Motorola, Inc. Optimizing encoder for efficiently determining analysis-by-synthesis codebook-related parameters
US7047188B2 (en) * 2002-11-08 2006-05-16 Motorola, Inc. Method and apparatus for improvement coding of the subframe gain in a speech coding system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE191987T1 (de) * 1989-09-01 2000-05-15 Motorola Inc Numerischer sprachkodierer mit verbesserter langzeitvorhersage durch subabtastauflösung
CA2027705C (en) * 1989-10-17 1994-02-15 Masami Akamine Speech coding system utilizing a recursive computation technique for improvement in processing speed
US5307441A (en) * 1989-11-29 1994-04-26 Comsat Corporation Wear-toll quality 4.8 kbps speech codec
US5396576A (en) * 1991-05-22 1995-03-07 Nippon Telegraph And Telephone Corporation Speech coding and decoding methods using adaptive and random code books
JP2613503B2 (ja) * 1991-07-08 1997-05-28 日本電信電話株式会社 音声の励振信号符号化・復号化方法
JP2897940B2 (ja) * 1991-07-22 1999-05-31 日本電信電話株式会社 音声の線形予測パラメータ符号化方法
JPH06102900A (ja) * 1992-09-18 1994-04-15 Fujitsu Ltd 音声符号化方式および音声復号化方式

Also Published As

Publication number Publication date
EP0689195A2 (de) 1995-12-27
EP0689195B1 (de) 2001-01-17
JPH086597A (ja) 1996-01-12
CA2152513A1 (en) 1995-12-22
EP0689195A3 (de) 1997-10-15
US5687284A (en) 1997-11-11
CA2152513C (en) 2000-01-25
DE69519896T2 (de) 2001-08-30
JP2970407B2 (ja) 1999-11-02

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Legal Events

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