DE69522979D1 - Erzeugung von linearen Prädiktionskoeffizienten bei Ausfall von Datenrahmen oder Verlust von Datenpaketen - Google Patents

Erzeugung von linearen Prädiktionskoeffizienten bei Ausfall von Datenrahmen oder Verlust von Datenpaketen

Info

Publication number
DE69522979D1
DE69522979D1 DE69522979T DE69522979T DE69522979D1 DE 69522979 D1 DE69522979 D1 DE 69522979D1 DE 69522979 T DE69522979 T DE 69522979T DE 69522979 T DE69522979 T DE 69522979T DE 69522979 D1 DE69522979 D1 DE 69522979D1
Authority
DE
Germany
Prior art keywords
event
loss
generation
linear prediction
prediction coefficients
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
DE69522979T
Other languages
English (en)
Other versions
DE69522979T2 (de
Inventor
Juin-Hwey Chen
Craig Robert Watkins
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
Publication of DE69522979D1 publication Critical patent/DE69522979D1/de
Application granted granted Critical
Publication of DE69522979T2 publication Critical patent/DE69522979T2/de
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
    • G10L19/08—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 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
    • 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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L2019/0012—Smoothing of parameters of the decoder interpolation

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)
DE69522979T 1994-03-14 1995-03-08 Erzeugung von linearen Prädiktionskoeffizienten bei Ausfall von Datenrahmen oder Verlust von Datenpaketen Expired - Lifetime DE69522979T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/212,475 US5574825A (en) 1994-03-14 1994-03-14 Linear prediction coefficient generation during frame erasure or packet loss

Publications (2)

Publication Number Publication Date
DE69522979D1 true DE69522979D1 (de) 2001-11-08
DE69522979T2 DE69522979T2 (de) 2002-04-25

Family

ID=22791178

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69522979T Expired - Lifetime DE69522979T2 (de) 1994-03-14 1995-03-08 Erzeugung von linearen Prädiktionskoeffizienten bei Ausfall von Datenrahmen oder Verlust von Datenpaketen

Country Status (7)

Country Link
US (2) US5574825A (de)
EP (1) EP0673018B1 (de)
JP (2) JP3241962B2 (de)
KR (2) KR950035136A (de)
AU (2) AU683126B2 (de)
CA (2) CA2142398C (de)
DE (1) DE69522979T2 (de)

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Also Published As

Publication number Publication date
AU1367595A (en) 1995-09-21
JP3241961B2 (ja) 2001-12-25
JPH0863200A (ja) 1996-03-08
CA2144102A1 (en) 1995-09-15
CA2142398C (en) 1998-10-06
JP3241962B2 (ja) 2001-12-25
DE69522979T2 (de) 2002-04-25
KR950035135A (ko) 1995-12-30
JPH07311596A (ja) 1995-11-28
KR950035136A (ko) 1995-12-30
AU683126B2 (en) 1997-10-30
AU1471395A (en) 1995-09-21
EP0673018A3 (de) 1997-08-13
EP0673018B1 (de) 2001-10-04
US5574825A (en) 1996-11-12
EP0673018A2 (de) 1995-09-20
CA2142398A1 (en) 1995-09-15
CA2144102C (en) 1999-01-12
US5884010A (en) 1999-03-16
AU685902B2 (en) 1998-01-29

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