CA2024742A1 - Appareil de codage de parols utilisant un codage multimode - Google Patents

Appareil de codage de parols utilisant un codage multimode

Info

Publication number
CA2024742A1
CA2024742A1 CA2024742A CA2024742A CA2024742A1 CA 2024742 A1 CA2024742 A1 CA 2024742A1 CA 2024742 A CA2024742 A CA 2024742A CA 2024742 A CA2024742 A CA 2024742A CA 2024742 A1 CA2024742 A1 CA 2024742A1
Authority
CA
Canada
Prior art keywords
coders
error correcting
speech signals
quality
reproduced speech
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
CA2024742A
Other languages
English (en)
Other versions
CA2024742C (fr
Inventor
Tomohiko Taniguchi
Yoshinori Tanaka
Akira Sasama
Yasuji Ohta
Fumio Amano
Shigeyuki Unagami
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 CA2024742A1 publication Critical patent/CA2024742A1/fr
Application granted granted Critical
Publication of CA2024742C publication Critical patent/CA2024742C/fr
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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
CA002024742A 1989-09-11 1990-09-06 Appareil de codage de parols utilisant un codage multimode Expired - Lifetime CA2024742C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1-235274 1989-09-11
JP1235274A JPH0398318A (ja) 1989-09-11 1989-09-11 音声符号化方式

Publications (2)

Publication Number Publication Date
CA2024742A1 true CA2024742A1 (fr) 1991-03-12
CA2024742C CA2024742C (fr) 1994-01-11

Family

ID=16983672

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002024742A Expired - Lifetime CA2024742C (fr) 1989-09-11 1990-09-06 Appareil de codage de parols utilisant un codage multimode

Country Status (5)

Country Link
US (1) US5224167A (fr)
EP (1) EP0417739B1 (fr)
JP (1) JPH0398318A (fr)
CA (1) CA2024742C (fr)
DE (1) DE69020269T2 (fr)

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JPH04276922A (ja) * 1991-03-04 1992-10-02 Mitsubishi Electric Corp 無線通信機
US5513297A (en) * 1992-07-10 1996-04-30 At&T Corp. Selective application of speech coding techniques to input signal segments
US5457783A (en) * 1992-08-07 1995-10-10 Pacific Communication Sciences, Inc. Adaptive speech coder having code excited linear prediction
US5517511A (en) * 1992-11-30 1996-05-14 Digital Voice Systems, Inc. Digital transmission of acoustic signals over a noisy communication channel
FI96248C (fi) * 1993-05-06 1996-05-27 Nokia Mobile Phones Ltd Menetelmä pitkän aikavälin synteesisuodattimen toteuttamiseksi sekä synteesisuodatin puhekoodereihin
WO1995006310A1 (fr) * 1993-08-27 1995-03-02 Pacific Communication Sciences, Inc. Codeur vocal adaptable a prediction lineaire a excitation par code
FI98164C (fi) * 1994-01-24 1997-04-25 Nokia Mobile Phones Ltd Puhekooderin parametrien käsittely tietoliikennejärjestelmän vastaanottimessa
US6134521A (en) * 1994-02-17 2000-10-17 Motorola, Inc. Method and apparatus for mitigating audio degradation in a communication system
US5512939A (en) * 1994-04-06 1996-04-30 At&T Corp. Low bit rate audio-visual communication system having integrated perceptual speech and video coding
FI96650C (fi) * 1994-07-11 1996-07-25 Nokia Telecommunications Oy Menetelmä ja laitteisto puheen välittämiseksi tietoliikennejärjestelmässä
JP3557255B2 (ja) * 1994-10-18 2004-08-25 松下電器産業株式会社 Ｌｓｐパラメータ復号化装置及び復号化方法
DE69615227T2 (de) * 1995-01-17 2002-04-25 Nec Corp., Tokio/Tokyo Sprachkodierer mit aus aktuellen und vorhergehenden Rahmen extrahierten Merkmalen
NL9500512A (nl) * 1995-03-15 1996-10-01 Nederland Ptt Inrichting voor het bepalen van de kwaliteit van een door een signaalbewerkingscircuit te genereren uitgangssignaal, alsmede werkwijze voor het bepalen van de kwaliteit van een door een signaalbewerkingscircuit te genereren uitgangssignaal.
JP2944489B2 (ja) * 1995-10-14 1999-09-06 日本電気株式会社 無線伝送システムにおける誤り訂正方式
JPH09261640A (ja) * 1996-03-22 1997-10-03 Oki Electric Ind Co Ltd 画像符号化装置
ATE205009T1 (de) * 1996-05-21 2001-09-15 Koninkl Kpn Nv Vorrichtung und verfahren zur bestimmung der qualität eines ausgangssignals, das von einem signalverarbeitungsschaltkreis erzeugt werden soll
JP2000507788A (ja) 1996-12-13 2000-06-20 コニンクリジケ ケーピーエヌ エヌブィー 信号特性決定のための装置および方法
WO1998038764A1 (fr) * 1997-02-27 1998-09-03 Siemens Aktiengesellschaft Procede et dispositif de detection d'erreurs de trame pour masquage d'erreurs, notamment dans le cas de transmissions gsm
US5956351A (en) * 1997-04-07 1999-09-21 International Business Machines Corporation Dual error correction code
US5987405A (en) * 1997-06-24 1999-11-16 International Business Machines Corporation Speech compression by speech recognition
DE19727938B4 (de) * 1997-07-01 2006-12-14 Mayah Communications Gmbh Verfahren und Vorrichtung zum Codieren von Signalen
US6169970B1 (en) 1998-01-08 2001-01-02 Lucent Technologies Inc. Generalized analysis-by-synthesis speech coding method and apparatus
DE19821273B4 (de) * 1998-05-13 2006-10-05 Deutsche Telekom Ag Meßverfahren zur gehörrichtigen Qualitätsbewertung von codierten Audiosignalen
CN1192656C (zh) * 1998-05-26 2005-03-09 皇家菲利浦电子有限公司 选择源编码器的收发器和在此收发器中进行的过程
US6141638A (en) * 1998-05-28 2000-10-31 Motorola, Inc. Method and apparatus for coding an information signal
JP4308345B2 (ja) * 1998-08-21 2009-08-05 パナソニック株式会社 マルチモード音声符号化装置及び復号化装置
AU1524300A (en) * 1998-11-13 2000-06-05 Qualcomm Incorporated Closed-loop variable-rate multimode predictive speech coder
US6691084B2 (en) 1998-12-21 2004-02-10 Qualcomm Incorporated Multiple mode variable rate speech coding
FR2792150B1 (fr) * 1999-04-08 2003-02-28 Canon Kk Procedes et dispositis de codage et de decodage de signaux numeriques, et systemes les mettant en oeuvre
JP3467469B2 (ja) * 2000-10-31 2003-11-17 Ｎｅｃエレクトロニクス株式会社 音声復号装置および音声復号プログラムを記録した記録媒体
CN100393085C (zh) * 2000-12-29 2008-06-04 诺基亚公司 数字网络中的音频信号质量增强
JP4022111B2 (ja) * 2002-08-23 2007-12-12 株式会社エヌ・ティ・ティ・ドコモ 信号符号化装置及び信号符号化方法
US8352248B2 (en) * 2003-01-03 2013-01-08 Marvell International Ltd. Speech compression method and apparatus
FR2867649A1 (fr) * 2003-12-10 2005-09-16 France Telecom Procede de codage multiple optimise
KR100695127B1 (ko) * 2004-10-08 2007-03-14 삼성전자주식회사 다 단계 음성 인식 장치 및 방법
TWI324576B (en) * 2005-11-09 2010-05-11 Morgan Aircraft Llc Aircraft attitude control configuration
KR20100006492A (ko) * 2008-07-09 2010-01-19 삼성전자주식회사 부호화 방식 결정 방법 및 장치
EP3252763A1 (fr) * 2016-05-30 2017-12-06 Nokia Technologies Oy Codeur audio à faible retard

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2102254B (en) * 1981-05-11 1985-08-07 Kokusai Denshin Denwa Co Ltd A speech analysis-synthesis system
JPS60116000A (ja) * 1983-11-28 1985-06-22 ケイディディ株式会社 音声符号化装置
US4701954A (en) * 1984-03-16 1987-10-20 American Telephone And Telegraph Company, At&T Bell Laboratories Multipulse LPC speech processing arrangement
US4831636A (en) * 1985-06-28 1989-05-16 Fujitsu Limited Coding transmission equipment for carrying out coding with adaptive quantization
US4802171A (en) * 1987-06-04 1989-01-31 Motorola, Inc. Method for error correction in digitally encoded speech
JPH084257B2 (ja) * 1987-10-02 1996-01-17 日本電気株式会社 （１＋ｎ）ヒットレス回線切替装置

Also Published As

Publication number Publication date
DE69020269T2 (de) 1996-01-25
US5224167A (en) 1993-06-29
EP0417739A2 (fr) 1991-03-20
EP0417739A3 (en) 1992-07-29
EP0417739B1 (fr) 1995-06-21
DE69020269D1 (de) 1995-07-27
JPH0398318A (ja) 1991-04-23
CA2024742C (fr) 1994-01-11

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