DE68914147D1 - Sprachcodierer mit niedriger Datenrate und niedriger Verzögerung. - Google Patents

Sprachcodierer mit niedriger Datenrate und niedriger Verzögerung.

Info

Publication number
DE68914147D1
DE68914147D1 DE89480098T DE68914147T DE68914147D1 DE 68914147 D1 DE68914147 D1 DE 68914147D1 DE 89480098 T DE89480098 T DE 89480098T DE 68914147 T DE68914147 T DE 68914147T DE 68914147 D1 DE68914147 D1 DE 68914147D1
Authority
DE
Germany
Prior art keywords
low
speech coder
data rate
delay speech
low data
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
DE89480098T
Other languages
English (en)
Other versions
DE68914147T2 (de
Inventor
Claude Galand
Jean Menez
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of DE68914147D1 publication Critical patent/DE68914147D1/de
Application granted granted Critical
Publication of DE68914147T2 publication Critical patent/DE68914147T2/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
    • 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
DE68914147T 1989-06-07 1989-06-07 Sprachcodierer mit niedriger Datenrate und niedriger Verzögerung. Expired - Fee Related DE68914147T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP89480098A EP0401452B1 (de) 1989-06-07 1989-06-07 Sprachcodierer mit niedriger Datenrate und niedriger Verzögerung

Publications (2)

Publication Number Publication Date
DE68914147D1 true DE68914147D1 (de) 1994-04-28
DE68914147T2 DE68914147T2 (de) 1994-10-20

Family

ID=8203061

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68914147T Expired - Fee Related DE68914147T2 (de) 1989-06-07 1989-06-07 Sprachcodierer mit niedriger Datenrate und niedriger Verzögerung.

Country Status (4)

Country Link
US (1) US5142583A (de)
EP (1) EP0401452B1 (de)
JP (1) JP2645465B2 (de)
DE (1) DE68914147T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2626223B2 (ja) * 1990-09-26 1997-07-02 日本電気株式会社 音声符号化装置
US5233660A (en) * 1991-09-10 1993-08-03 At&T Bell Laboratories Method and apparatus for low-delay celp speech coding and decoding
US5339384A (en) * 1992-02-18 1994-08-16 At&T Bell Laboratories Code-excited linear predictive coding with low delay for speech or audio signals
US5694519A (en) * 1992-02-18 1997-12-02 Lucent Technologies, Inc. Tunable post-filter for tandem coders
US5327520A (en) * 1992-06-04 1994-07-05 At&T Bell Laboratories Method of use of voice message coder/decoder
FI95086C (fi) * 1992-11-26 1995-12-11 Nokia Mobile Phones Ltd Menetelmä puhesignaalin tehokkaaksi koodaamiseksi
FI96248C (fi) * 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Menetelmä pitkän aikavälin synteesisuodattimen toteuttamiseksi sekä synteesisuodatin puhekoodereihin
US5761633A (en) * 1994-08-30 1998-06-02 Samsung Electronics Co., Ltd. Method of encoding and decoding speech signals
US5497337A (en) * 1994-10-21 1996-03-05 International Business Machines Corporation Method for designing high-Q inductors in silicon technology without expensive metalization
US5708756A (en) * 1995-02-24 1998-01-13 Industrial Technology Research Institute Low delay, middle bit rate speech coder
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
FR2741744B1 (fr) * 1995-11-23 1998-01-02 Thomson Csf Procede et dispositif d'evaluation de l'energie du signal de parole par sous bande pour vocodeur bas debits
US6862298B1 (en) 2000-07-28 2005-03-01 Crystalvoice Communications, Inc. Adaptive jitter buffer for internet telephony
DE102006022346B4 (de) 2006-05-12 2008-02-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Informationssignalcodierung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941596A (ja) * 1982-08-30 1984-03-07 星野　謙三 切削法
NL8400728A (nl) * 1984-03-07 1985-10-01 Philips Nv Digitale spraakcoder met basisband residucodering.
IT1180126B (it) * 1984-11-13 1987-09-23 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante tecniche di quantizzazione vettoriale
JPS62234435A (ja) * 1986-04-04 1987-10-14 Kokusai Denshin Denwa Co Ltd <Kdd> 符号化音声の復号化方式
JPS6334478A (ja) * 1986-07-28 1988-02-15 株式会社日立製作所 冷蔵庫用基板
JPS6337724A (ja) * 1986-07-31 1988-02-18 Fujitsu Ltd 符号化伝送装置
DE3783905T2 (de) * 1987-03-05 1993-08-19 Ibm Verfahren zur grundfrequenzbestimmung und sprachkodierer unter verwendung dieses verfahrens.
DE3883519T2 (de) * 1988-03-08 1994-03-17 Ibm Verfahren und Einrichtung zur Sprachkodierung mit mehreren Datenraten.
EP0331857B1 (de) * 1988-03-08 1992-05-20 International Business Machines Corporation Verfahren und Einrichtung zur Sprachkodierung mit niedriger Datenrate

Also Published As

Publication number Publication date
JP2645465B2 (ja) 1997-08-25
US5142583A (en) 1992-08-25
DE68914147T2 (de) 1994-10-20
JPH0341500A (ja) 1991-02-21
EP0401452A1 (de) 1990-12-12
EP0401452B1 (de) 1994-03-23

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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