KR20050030887A - 신호 부호화 장치 및 방법, 및 신호 복호 장치 및 방법 - Google Patents

신호 부호화 장치 및 방법, 및 신호 복호 장치 및 방법 Download PDF

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Publication number
KR20050030887A
KR20050030887A KR1020047005898A KR20047005898A KR20050030887A KR 20050030887 A KR20050030887 A KR 20050030887A KR 1020047005898 A KR1020047005898 A KR 1020047005898A KR 20047005898 A KR20047005898 A KR 20047005898A KR 20050030887 A KR20050030887 A KR 20050030887A
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KR
South Korea
Prior art keywords
band
spectrum
signal
extended
mapping
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KR1020047005898A
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English (en)
Korean (ko)
Inventor
히로유키 혼마
준 마쓰모토
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소니 가부시끼 가이샤
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Publication of KR20050030887A publication Critical patent/KR20050030887A/ko
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • 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
    • G10L19/02—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
    • G10L19/0204—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

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)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
KR1020047005898A 2002-08-21 2003-07-29 신호 부호화 장치 및 방법, 및 신호 복호 장치 및 방법 Withdrawn KR20050030887A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2002241052A JP3861770B2 (ja) 2002-08-21 2002-08-21 信号符号化装置及び方法、信号復号装置及び方法、並びにプログラム及び記録媒体
JPJP-P-2002-00241052 2002-08-21

Publications (1)

Publication Number Publication Date
KR20050030887A true KR20050030887A (ko) 2005-03-31

Family

ID=31943955

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020047005898A Withdrawn KR20050030887A (ko) 2002-08-21 2003-07-29 신호 부호화 장치 및 방법, 및 신호 복호 장치 및 방법

Country Status (6)

Country Link
US (1) US7205910B2 (https=)
EP (1) EP1531551A4 (https=)
JP (1) JP3861770B2 (https=)
KR (1) KR20050030887A (https=)
CN (1) CN1579047A (https=)
WO (1) WO2004019497A1 (https=)

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Also Published As

Publication number Publication date
JP2004080635A (ja) 2004-03-11
WO2004019497A1 (ja) 2004-03-04
CN1579047A (zh) 2005-02-09
US20040247037A1 (en) 2004-12-09
JP3861770B2 (ja) 2006-12-20
US7205910B2 (en) 2007-04-17
EP1531551A1 (en) 2005-05-18
EP1531551A4 (en) 2006-01-04

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PA0105 International application

Patent event date: 20040421

Patent event code: PA01051R01D

Comment text: International Patent Application

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid