ATE418779T1 - Verfahren zur verbesserung der kodierungseffizienz eines audiosignals - Google Patents

Verfahren zur verbesserung der kodierungseffizienz eines audiosignals

Info

Publication number
ATE418779T1
ATE418779T1 AT05104931T AT05104931T ATE418779T1 AT E418779 T1 ATE418779 T1 AT E418779T1 AT 05104931 T AT05104931 T AT 05104931T AT 05104931 T AT05104931 T AT 05104931T AT E418779 T1 ATE418779 T1 AT E418779T1
Authority
AT
Austria
Prior art keywords
audio signal
coded
compared
amount
improving
Prior art date
Application number
AT05104931T
Other languages
English (en)
Inventor
Juha Ojanpera
Original Assignee
Nokia 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 Nokia Corp filed Critical Nokia Corp
Application granted granted Critical
Publication of ATE418779T1 publication Critical patent/ATE418779T1/de

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
    • G10L19/04—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
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor

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)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
AT05104931T 1999-07-05 2000-07-05 Verfahren zur verbesserung der kodierungseffizienz eines audiosignals ATE418779T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI991537A FI116992B (fi) 1999-07-05 1999-07-05 Menetelmät, järjestelmä ja laitteet audiosignaalin koodauksen ja siirron tehostamiseksi

Publications (1)

Publication Number Publication Date
ATE418779T1 true ATE418779T1 (de) 2009-01-15

Family

ID=8555025

Family Applications (2)

Application Number Title Priority Date Filing Date
AT05104931T ATE418779T1 (de) 1999-07-05 2000-07-05 Verfahren zur verbesserung der kodierungseffizienz eines audiosignals
AT00944090T ATE298919T1 (de) 1999-07-05 2000-07-05 Verfahren zur verbesserung der kodierungseffizienz eines audiosignals

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT00944090T ATE298919T1 (de) 1999-07-05 2000-07-05 Verfahren zur verbesserung der kodierungseffizienz eines audiosignals

Country Status (13)

Country Link
US (2) US7289951B1 (de)
EP (3) EP2037451A1 (de)
JP (2) JP4142292B2 (de)
KR (2) KR100593459B1 (de)
CN (2) CN100568344C (de)
AT (2) ATE418779T1 (de)
AU (1) AU761771B2 (de)
BR (1) BRPI0012182B1 (de)
CA (1) CA2378435C (de)
DE (2) DE60021083T2 (de)
ES (1) ES2244452T3 (de)
FI (1) FI116992B (de)
WO (1) WO2001003122A1 (de)

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Also Published As

Publication number Publication date
CN1372683A (zh) 2002-10-02
KR20020019483A (ko) 2002-03-12
WO2001003122A1 (en) 2001-01-11
ES2244452T3 (es) 2005-12-16
AU761771B2 (en) 2003-06-12
CN100568344C (zh) 2009-12-09
CA2378435A1 (en) 2001-01-11
US7289951B1 (en) 2007-10-30
KR100593459B1 (ko) 2006-06-28
ATE298919T1 (de) 2005-07-15
US20060089832A1 (en) 2006-04-27
DE60021083T2 (de) 2006-05-18
EP1587062A1 (de) 2005-10-19
DE60021083D1 (de) 2005-08-04
FI991537A (fi) 2001-01-06
KR100545774B1 (ko) 2006-01-24
EP1587062B1 (de) 2008-12-24
DE60041207D1 (de) 2009-02-05
CN1766990A (zh) 2006-05-03
JP2005189886A (ja) 2005-07-14
CN1235190C (zh) 2006-01-04
EP2037451A1 (de) 2009-03-18
JP4426483B2 (ja) 2010-03-03
US7457743B2 (en) 2008-11-25
EP1203370A1 (de) 2002-05-08
BRPI0012182B1 (pt) 2017-02-07
FI116992B (fi) 2006-04-28
EP1203370B1 (de) 2005-06-29
BR0012182A (pt) 2002-04-16
JP2003504654A (ja) 2003-02-04
KR20050085977A (ko) 2005-08-29
AU5832600A (en) 2001-01-22
CA2378435C (en) 2008-01-08
JP4142292B2 (ja) 2008-09-03

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