DE69523498D1 - Verminderung der Rechenkomplexität bei Ausfall von Datenrahmen oder Verlust von Datenpaketen - Google Patents

Verminderung der Rechenkomplexität bei Ausfall von Datenrahmen oder Verlust von Datenpaketen

Info

Publication number
DE69523498D1
DE69523498D1 DE69523498T DE69523498T DE69523498D1 DE 69523498 D1 DE69523498 D1 DE 69523498D1 DE 69523498 T DE69523498 T DE 69523498T DE 69523498 T DE69523498 T DE 69523498T DE 69523498 D1 DE69523498 D1 DE 69523498D1
Authority
DE
Germany
Prior art keywords
event
loss
reduction
computing complexity
data packets
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 - Lifetime
Application number
DE69523498T
Other languages
English (en)
Other versions
DE69523498T2 (de
Inventor
Juin-Hwey Chen
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69523498D1 publication Critical patent/DE69523498D1/de
Publication of DE69523498T2 publication Critical patent/DE69523498T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69523498T 1994-03-14 1995-02-28 Verminderung der Rechenkomplexität bei Ausfall von Datenrahmen oder Verlust von Datenpaketen Expired - Lifetime DE69523498T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US21243594A 1994-03-14 1994-03-14

Publications (2)

Publication Number Publication Date
DE69523498D1 true DE69523498D1 (de) 2001-12-06
DE69523498T2 DE69523498T2 (de) 2002-07-11

Family

ID=22790996

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69523498T Expired - Lifetime DE69523498T2 (de) 1994-03-14 1995-02-28 Verminderung der Rechenkomplexität bei Ausfall von Datenrahmen oder Verlust von Datenpaketen

Country Status (7)

Country Link
US (1) US5717822A (de)
EP (1) EP0673015B1 (de)
JP (1) JP3459133B2 (de)
KR (1) KR950035133A (de)
AU (1) AU683125B2 (de)
CA (1) CA2142391C (de)
DE (1) DE69523498T2 (de)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5450449A (en) * 1994-03-14 1995-09-12 At&T Ipm Corp. Linear prediction coefficient generation during frame erasure or packet loss
US5574825A (en) * 1994-03-14 1996-11-12 Lucent Technologies Inc. Linear prediction coefficient generation during frame erasure or packet loss
US5615298A (en) * 1994-03-14 1997-03-25 Lucent Technologies Inc. Excitation signal synthesis during frame erasure or packet loss
JPH09164705A (ja) 1995-12-14 1997-06-24 Mitsubishi Electric Corp インクジェット記録装置
US5907822A (en) * 1997-04-04 1999-05-25 Lincom Corporation Loss tolerant speech decoder for telecommunications
US5953695A (en) * 1997-10-29 1999-09-14 Lucent Technologies Inc. Method and apparatus for synchronizing digital speech communications
US7117156B1 (en) 1999-04-19 2006-10-03 At&T Corp. Method and apparatus for performing packet loss or frame erasure concealment
WO2000063883A1 (en) * 1999-04-19 2000-10-26 At & T Corp. Method and apparatus for performing packet loss or frame erasure concealment
US7047190B1 (en) 1999-04-19 2006-05-16 At&Tcorp. Method and apparatus for performing packet loss or frame erasure concealment
ATE336780T1 (de) * 1999-11-23 2006-09-15 Texas Instruments Inc Verschleierungsverfahren bei verlust von sprachrahmen
FR2813722B1 (fr) * 2000-09-05 2003-01-24 France Telecom Procede et dispositif de dissimulation d'erreurs et systeme de transmission comportant un tel dispositif
EP1199709A1 (de) * 2000-10-20 2002-04-24 Telefonaktiebolaget Lm Ericsson Fehlerverdeckung in Bezug auf die Dekodierung von kodierten akustischen Signalen
US7031926B2 (en) * 2000-10-23 2006-04-18 Nokia Corporation Spectral parameter substitution for the frame error concealment in a speech decoder
EP1217613A1 (de) * 2000-12-19 2002-06-26 Koninklijke Philips Electronics N.V. Wiederherstellung von schlechten oder fehlenden Rahmen in zellularer Telefonie
FR2830970B1 (fr) * 2001-10-12 2004-01-30 France Telecom Procede et dispositif de synthese de trames de substitution, dans une succession de trames representant un signal de parole
US7519535B2 (en) * 2005-01-31 2009-04-14 Qualcomm Incorporated Frame erasure concealment in voice communications
US8620645B2 (en) * 2007-03-02 2013-12-31 Telefonaktiebolaget L M Ericsson (Publ) Non-causal postfilter
WO2009047461A1 (fr) * 2007-09-21 2009-04-16 France Telecom Dissimulation d'erreur de transmission dans un signal numerique avec repartition de la complexite
US9026434B2 (en) * 2011-04-11 2015-05-05 Samsung Electronic Co., Ltd. Frame erasure concealment for a multi rate speech and audio codec

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4969192A (en) * 1987-04-06 1990-11-06 Voicecraft, Inc. Vector adaptive predictive coder for speech and audio
JP3102015B2 (ja) * 1990-05-28 2000-10-23 日本電気株式会社 音声復号化方法
EP0588932B1 (de) * 1991-06-11 2001-11-14 QUALCOMM Incorporated Vocoder mit veraendlicher bitrate
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
US5327520A (en) * 1992-06-04 1994-07-05 At&T Bell Laboratories Method of use of voice message coder/decoder
US5450449A (en) * 1994-03-14 1995-09-12 At&T Ipm Corp. Linear prediction coefficient generation during frame erasure or packet loss

Also Published As

Publication number Publication date
DE69523498T2 (de) 2002-07-11
CA2142391A1 (en) 1995-09-15
AU683125B2 (en) 1997-10-30
US5717822A (en) 1998-02-10
JPH07325594A (ja) 1995-12-12
JP3459133B2 (ja) 2003-10-20
CA2142391C (en) 2001-05-29
AU1367495A (en) 1995-09-21
EP0673015A3 (de) 1997-09-10
KR950035133A (ko) 1995-12-30
EP0673015B1 (de) 2001-10-31
EP0673015A2 (de) 1995-09-20

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Legal Events

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