DK1386312T3 - Forbedring af transient ydeevne af audio kodningssystemer med lav bithastighed ved reduktion af forudgående stöj - Google Patents

Forbedring af transient ydeevne af audio kodningssystemer med lav bithastighed ved reduktion af forudgående stöj

Info

Publication number
DK1386312T3
DK1386312T3 DK02769666T DK02769666T DK1386312T3 DK 1386312 T3 DK1386312 T3 DK 1386312T3 DK 02769666 T DK02769666 T DK 02769666T DK 02769666 T DK02769666 T DK 02769666T DK 1386312 T3 DK1386312 T3 DK 1386312T3
Authority
DK
Denmark
Prior art keywords
transient
rate audio
audio coding
bit rate
audio signal
Prior art date
Application number
DK02769666T
Other languages
Danish (da)
English (en)
Inventor
Brett G Crockett
Original Assignee
Dolby Lab Licensing 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 Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Application granted granted Critical
Publication of DK1386312T3 publication Critical patent/DK1386312T3/da

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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
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/04—Time compression or expansion
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—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 spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • 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
    • G10L19/02—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 spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G10L19/025—Detection of transients or attacks for time/frequency resolution switching

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Noise Elimination (AREA)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DK02769666T 2001-05-10 2002-04-25 Forbedring af transient ydeevne af audio kodningssystemer med lav bithastighed ved reduktion af forudgående stöj DK1386312T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29028601P 2001-05-10 2001-05-10
PCT/US2002/012957 WO2002093560A1 (en) 2001-05-10 2002-04-25 Improving transient performance of low bit rate audio coding systems by reducing pre-noise

Publications (1)

Publication Number Publication Date
DK1386312T3 true DK1386312T3 (da) 2008-06-09

Family

ID=23115313

Family Applications (1)

Application Number Title Priority Date Filing Date
DK02769666T DK1386312T3 (da) 2001-05-10 2002-04-25 Forbedring af transient ydeevne af audio kodningssystemer med lav bithastighed ved reduktion af forudgående stöj

Country Status (14)

Country Link
US (1) US7313519B2 (es)
EP (1) EP1386312B1 (es)
JP (1) JP4290997B2 (es)
KR (1) KR100945673B1 (es)
CN (1) CN1312662C (es)
AT (1) ATE387000T1 (es)
AU (1) AU2002307533B2 (es)
CA (1) CA2445480C (es)
DE (1) DE60225130T2 (es)
DK (1) DK1386312T3 (es)
ES (1) ES2298394T3 (es)
HK (1) HK1070457A1 (es)
MX (1) MXPA03010237A (es)
WO (1) WO2002093560A1 (es)

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KR20040034604A (ko) 2004-04-28
CN1552060A (zh) 2004-12-01
EP1386312A1 (en) 2004-02-04
CA2445480A1 (en) 2002-11-21
MXPA03010237A (es) 2004-03-16
JP2004528597A (ja) 2004-09-16
AU2002307533B2 (en) 2008-01-31
US20040133423A1 (en) 2004-07-08
ATE387000T1 (de) 2008-03-15
KR100945673B1 (ko) 2010-03-05
CN1312662C (zh) 2007-04-25
WO2002093560A1 (en) 2002-11-21
DE60225130T2 (de) 2009-02-26
ES2298394T3 (es) 2008-05-16
JP4290997B2 (ja) 2009-07-08
CA2445480C (en) 2011-04-12
DE60225130D1 (de) 2008-04-03
HK1070457A1 (en) 2005-06-17
EP1386312B1 (en) 2008-02-20
US7313519B2 (en) 2007-12-25

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