DE60021083D1 - Verfahren zur verbesserung der kodierungseffizienz eines audiosignals - Google Patents

Verfahren zur verbesserung der kodierungseffizienz eines audiosignals

Info

Publication number
DE60021083D1
DE60021083D1 DE60021083T DE60021083T DE60021083D1 DE 60021083 D1 DE60021083 D1 DE 60021083D1 DE 60021083 T DE60021083 T DE 60021083T DE 60021083 T DE60021083 T DE 60021083T DE 60021083 D1 DE60021083 D1 DE 60021083D1
Authority
DE
Germany
Prior art keywords
audio signal
coded
compared
amount
improving
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
DE60021083T
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English (en)
Other versions
DE60021083T2 (de
Inventor
Juha Ojanperae
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.)
Nokia Oyj
Original Assignee
Nokia Oyj
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 Oyj filed Critical Nokia Oyj
Publication of DE60021083D1 publication Critical patent/DE60021083D1/de
Application granted granted Critical
Publication of DE60021083T2 publication Critical patent/DE60021083T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • 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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor
DE60021083T 1999-07-05 2000-07-05 Verfahren zur verbesserung der kodierungseffizienz eines audiosignals Expired - Lifetime DE60021083T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI991537 1999-07-05
FI991537A FI116992B (fi) 1999-07-05 1999-07-05 Menetelmät, järjestelmä ja laitteet audiosignaalin koodauksen ja siirron tehostamiseksi
PCT/FI2000/000619 WO2001003122A1 (en) 1999-07-05 2000-07-05 Method for improving the coding efficiency of an audio signal

Publications (2)

Publication Number Publication Date
DE60021083D1 true DE60021083D1 (de) 2005-08-04
DE60021083T2 DE60021083T2 (de) 2006-05-18

Family

ID=8555025

Family Applications (2)

Application Number Title Priority Date Filing Date
DE60021083T Expired - Lifetime DE60021083T2 (de) 1999-07-05 2000-07-05 Verfahren zur verbesserung der kodierungseffizienz eines audiosignals
DE60041207T Expired - Lifetime DE60041207D1 (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
DE60041207T Expired - Lifetime DE60041207D1 (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) EP1587062B1 (de)
JP (2) JP4142292B2 (de)
KR (2) KR100545774B1 (de)
CN (2) CN1235190C (de)
AT (2) ATE298919T1 (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
FI991537A (fi) 2001-01-06
JP4142292B2 (ja) 2008-09-03
EP1587062B1 (de) 2008-12-24
JP2003504654A (ja) 2003-02-04
DE60041207D1 (de) 2009-02-05
AU5832600A (en) 2001-01-22
BR0012182A (pt) 2002-04-16
CN1372683A (zh) 2002-10-02
BRPI0012182B1 (pt) 2017-02-07
EP1587062A1 (de) 2005-10-19
AU761771B2 (en) 2003-06-12
EP1203370B1 (de) 2005-06-29
CA2378435C (en) 2008-01-08
CN1766990A (zh) 2006-05-03
JP4426483B2 (ja) 2010-03-03
KR100593459B1 (ko) 2006-06-28
KR20050085977A (ko) 2005-08-29
JP2005189886A (ja) 2005-07-14
CA2378435A1 (en) 2001-01-11
US20060089832A1 (en) 2006-04-27
DE60021083T2 (de) 2006-05-18
CN100568344C (zh) 2009-12-09
ES2244452T3 (es) 2005-12-16
KR100545774B1 (ko) 2006-01-24
US7289951B1 (en) 2007-10-30
WO2001003122A1 (en) 2001-01-11
EP2037451A1 (de) 2009-03-18
CN1235190C (zh) 2006-01-04
ATE418779T1 (de) 2009-01-15
KR20020019483A (ko) 2002-03-12
US7457743B2 (en) 2008-11-25
EP1203370A1 (de) 2002-05-08
ATE298919T1 (de) 2005-07-15
FI116992B (fi) 2006-04-28

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