JP4843124B2 - 音声信号を符号化及び復号化するためのコーデック及び方法 - Google Patents

音声信号を符号化及び復号化するためのコーデック及び方法 Download PDF

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Publication number
JP4843124B2
JP4843124B2 JP54895098A JP54895098A JP4843124B2 JP 4843124 B2 JP4843124 B2 JP 4843124B2 JP 54895098 A JP54895098 A JP 54895098A JP 54895098 A JP54895098 A JP 54895098A JP 4843124 B2 JP4843124 B2 JP 4843124B2
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signal
subband
low
encoded
encoding
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JP2001525079A (ja
JP2001525079A5 (enExample
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タッカー，ロジャー，セシル，フェリー
セイムール，カール，ウィリアム
ロビンソン，アンソニー，ジョン
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HP Inc
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Hewlett Packard Co
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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
    • G10L21/02—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
    • 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
    • G10L19/005—Correction of errors induced by the transmission channel, if related to the coding algorithm
    • 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
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/087—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters using mixed excitation models, e.g. MELP, MBE, split band LPC or HVXC

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  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP54895098A 1997-05-15 1998-05-15 音声信号を符号化及び復号化するためのコーデック及び方法 Expired - Lifetime JP4843124B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP97303321A EP0878790A1 (en) 1997-05-15 1997-05-15 Voice coding system and method
EP97303321.0 1997-05-15
PCT/GB1998/001414 WO1998052187A1 (en) 1997-05-15 1998-05-15 Audio coding systems and methods

Publications (3)

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JP2001525079A JP2001525079A (ja) 2001-12-04
JP2001525079A5 JP2001525079A5 (enExample) 2005-12-02
JP4843124B2 true JP4843124B2 (ja) 2011-12-21

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US (2) US6675144B1 (enExample)
EP (2) EP0878790A1 (enExample)
JP (1) JP4843124B2 (enExample)
DE (1) DE69816810T2 (enExample)
WO (1) WO1998052187A1 (enExample)

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Also Published As

Publication number Publication date
EP0981816A1 (en) 2000-03-01
EP0981816B1 (en) 2003-07-30
EP0878790A1 (en) 1998-11-18
JP2001525079A (ja) 2001-12-04
DE69816810D1 (de) 2003-09-04
US20040019492A1 (en) 2004-01-29
DE69816810T2 (de) 2004-11-25
WO1998052187A1 (en) 1998-11-19
US6675144B1 (en) 2004-01-06
EP0981816B9 (en) 2004-08-11

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