JP4035631B2 - 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化 - Google Patents

可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化 Download PDF

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JP4035631B2
JP4035631B2 JP2001528974A JP2001528974A JP4035631B2 JP 4035631 B2 JP4035631 B2 JP 4035631B2 JP 2001528974 A JP2001528974 A JP 2001528974A JP 2001528974 A JP2001528974 A JP 2001528974A JP 4035631 B2 JP4035631 B2 JP 4035631B2
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signal
spectral envelope
resolution
time
encoded
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JP2003529787A (ja
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リリュエリード、ラルス、グスタフ
クイェルリング、クリストフェル
エクストランド、ペル
ヘン、フレドリク
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Dolby International AB
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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
    • G10L19/022—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
    • 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
    • G10L19/04—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
    • G10L19/06—Determination or coding of the spectral characteristics, e.g. of the short-term prediction coefficients
    • 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
    • G10L19/0204—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 subband decomposition
    • G10L19/0208—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
    • 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G10L19/035—Scalar quantisation
    • 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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/038—Speech enhancement, e.g. noise reduction or echo cancellation using band spreading techniques
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
    • G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Electrophonic Musical Instruments (AREA)
JP2001528974A 1999-10-01 2000-09-29 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化 Expired - Lifetime JP4035631B2 (ja)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
SE9903552A SE9903552D0 (sv) 1999-01-27 1999-10-01 Efficient spectral envelope coding using dynamic scalefactor grouping and time/frequency switching
SE9903552-9 1999-10-01
SE00/00158 2000-01-26
PCT/SE2000/000158 WO2000045378A2 (en) 1999-01-27 2000-01-26 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching
PCT/SE2000/001887 WO2001026095A1 (en) 1999-10-01 2000-09-29 Efficient spectral envelope coding using variable time/frequency resolution and time/frequency switching

Related Child Applications (2)

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JP2005292384A Division JP4628921B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化
JP2005292388A Division JP4334526B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化

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JP2003529787A JP2003529787A (ja) 2003-10-07
JP2003529787A5 JP2003529787A5 (https=) 2005-07-21
JP4035631B2 true JP4035631B2 (ja) 2008-01-23

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JP2005292384A Expired - Lifetime JP4628921B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化
JP2005292388A Expired - Lifetime JP4334526B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化

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JP2005292388A Expired - Lifetime JP4334526B2 (ja) 1999-10-01 2005-10-05 可変時間／周波数分解能および時間／周波数切り替えを使用する効率的なスペクトルエンベロープ符号化

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US (3) US6978236B1 (https=)
EP (1) EP1216474B1 (https=)
JP (3) JP4035631B2 (https=)
CN (1) CN1172293C (https=)
AT (1) ATE271250T1 (https=)
AU (1) AU7821200A (https=)
BR (1) BRPI0014642B1 (https=)
DE (1) DE60012198T2 (https=)
DK (1) DK1216474T3 (https=)
ES (1) ES2223591T3 (https=)
HK (1) HK1049401B (https=)
PT (1) PT1216474E (https=)
RU (1) RU2236046C2 (https=)
WO (1) WO2001026095A1 (https=)

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