ATE387000T1 - 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

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Publication number
ATE387000T1
ATE387000T1 AT02769666T AT02769666T ATE387000T1 AT E387000 T1 ATE387000 T1 AT E387000T1 AT 02769666 T AT02769666 T AT 02769666T AT 02769666 T AT02769666 T AT 02769666T AT E387000 T1 ATE387000 T1 AT E387000T1
Authority
AT
Austria
Prior art keywords
transient
noise
audio signal
audio
transform
Prior art date
Application number
AT02769666T
Other languages
English (en)
Inventor
Brett Crockett
Original Assignee
Dolby Lab Licensing Corp
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Publication date
Application filed by Dolby Lab Licensing Corp filed Critical Dolby Lab Licensing Corp
Application granted granted Critical
Publication of ATE387000T1 publication Critical patent/ATE387000T1/de

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    • 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)
  • Analogue/Digital Conversion (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Noise Elimination (AREA)
AT02769666T 2001-05-10 2002-04-25 Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches ATE387000T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US29028601P 2001-05-10 2001-05-10

Publications (1)

Publication Number Publication Date
ATE387000T1 true ATE387000T1 (de) 2008-03-15

Family

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AT02769666T ATE387000T1 (de) 2001-05-10 2002-04-25 Verbesserung der transientenleistung bei kodierern mit niedriger bitrate durch unterdrückung des vorgeräusches

Country Status (13)

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)
MX (1) MXPA03010237A (de)
WO (1) WO2002093560A1 (de)

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US20040122772A1 (en) * 2002-12-18 2004-06-24 International Business Machines Corporation Method, system and program product for protecting privacy

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JP4290997B2 (ja) 2009-07-08
EP1386312A1 (de) 2004-02-04
KR20040034604A (ko) 2004-04-28
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US7313519B2 (en) 2007-12-25
CA2445480C (en) 2011-04-12
EP1386312B1 (de) 2008-02-20
WO2002093560A1 (en) 2002-11-21
DE60225130T2 (de) 2009-02-26
ES2298394T3 (es) 2008-05-16
AU2002307533B2 (en) 2008-01-31
CN1312662C (zh) 2007-04-25
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