CN101325060B - 频谱域中利用自适应切换的时间分辨率对音频信号编解码的方法和设备 - Google Patents

频谱域中利用自适应切换的时间分辨率对音频信号编解码的方法和设备 Download PDF

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CN101325060B
CN101325060B CN2008101113001A CN200810111300A CN101325060B CN 101325060 B CN101325060 B CN 101325060B CN 2008101113001 A CN2008101113001 A CN 2008101113001A CN 200810111300 A CN200810111300 A CN 200810111300A CN 101325060 B CN101325060 B CN 101325060B
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CN101325060A (zh
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约翰内斯·贝姆
斯文·科尔顿
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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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
    • 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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • 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
    • 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

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  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
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  • Audiology, Speech & Language Pathology (AREA)
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CN2008101113001A 2007-06-14 2008-06-13 频谱域中利用自适应切换的时间分辨率对音频信号编解码的方法和设备 Expired - Fee Related CN101325060B (zh)

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EP07110289A EP2015293A1 (en) 2007-06-14 2007-06-14 Method and apparatus for encoding and decoding an audio signal using adaptively switched temporal resolution in the spectral domain

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EP2003643A1 (en) 2008-12-17
CN101325060A (zh) 2008-12-17
US8095359B2 (en) 2012-01-10
EP2015293A1 (en) 2009-01-14
JP5627843B2 (ja) 2014-11-19
KR101445396B1 (ko) 2014-09-26
EP2003643B1 (en) 2014-02-12
US20090012797A1 (en) 2009-01-08
JP2008310327A (ja) 2008-12-25
KR20080110542A (ko) 2008-12-18

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