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DE60225130D1 - Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches - Google Patents

Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches

Info

Publication number
DE60225130D1
DE60225130D1 DE60225130T DE60225130T DE60225130D1 DE 60225130 D1 DE60225130 D1 DE 60225130D1 DE 60225130 T DE60225130 T DE 60225130T DE 60225130 T DE60225130 T DE 60225130T DE 60225130 D1 DE60225130 D1 DE 60225130D1
Authority
DE
Germany
Prior art keywords
transient
audio signal
audio
transform
bit
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
DE60225130T
Other languages
English (en)
Other versions
DE60225130T2 (de
Inventor
Brett G Crockett
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.)
Dolby Laboratories Licensing Corp
Original Assignee
Dolby Laboratories 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 Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Application granted granted Critical
Publication of DE60225130D1 publication Critical patent/DE60225130D1/de
Publication of DE60225130T2 publication Critical patent/DE60225130T2/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
    • 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)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (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)
DE60225130T 2001-05-10 2002-04-25 Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches Expired - Lifetime DE60225130T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US29028601P 2001-05-10 2001-05-10
US290286P 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 (2)

Publication Number Publication Date
DE60225130D1 true DE60225130D1 (de) 2008-04-03
DE60225130T2 DE60225130T2 (de) 2009-02-26

Family

ID=23115313

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60225130T Expired - Lifetime DE60225130T2 (de) 2001-05-10 2002-04-25 Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches

Country Status (14)

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

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JP4272050B2 (ja) 2001-05-25 2009-06-03 ドルビー・ラボラトリーズ・ライセンシング・コーポレーション オーディトリーイベントに基づく特徴付けを使ったオーディオの比較
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CA2445480A1 (en) 2002-11-21
WO2002093560A1 (en) 2002-11-21
DK1386312T3 (da) 2008-06-09
ATE387000T1 (de) 2008-03-15
CA2445480C (en) 2011-04-12
KR20040034604A (ko) 2004-04-28
AU2002307533B2 (en) 2008-01-31
DE60225130T2 (de) 2009-02-26
HK1070457A1 (en) 2005-06-17
US7313519B2 (en) 2007-12-25
MXPA03010237A (es) 2004-03-16
EP1386312B1 (de) 2008-02-20
EP1386312A1 (de) 2004-02-04
KR100945673B1 (ko) 2010-03-05
JP2004528597A (ja) 2004-09-16
ES2298394T3 (es) 2008-05-16
US20040133423A1 (en) 2004-07-08
CN1312662C (zh) 2007-04-25
CN1552060A (zh) 2004-12-01

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