ATE394774T1 - Kodierungs-, dekodierungsvorrichtung und methode dafür - Google Patents

Kodierungs-, dekodierungsvorrichtung und methode dafür

Info

Publication number
ATE394774T1
ATE394774T1 AT05744114T AT05744114T ATE394774T1 AT E394774 T1 ATE394774 T1 AT E394774T1 AT 05744114 T AT05744114 T AT 05744114T AT 05744114 T AT05744114 T AT 05744114T AT E394774 T1 ATE394774 T1 AT E394774T1
Authority
AT
Austria
Prior art keywords
sub
bands
band
spectrum
gain
Prior art date
Application number
AT05744114T
Other languages
English (en)
Inventor
Masahiro Oshikiri
Original Assignee
Matsushita Electric Ind Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Application granted granted Critical
Publication of ATE394774T1 publication Critical patent/ATE394774T1/de

Links

Classifications

    • 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
    • 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
    • G10L19/04—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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/66—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission
    • H04B1/667—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission for reducing bandwidth of signals; for improving efficiency of transmission using a division in frequency subbands
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Theoretical Computer Science (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Error Detection And Correction (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
AT05744114T 2004-05-19 2005-05-17 Kodierungs-, dekodierungsvorrichtung und methode dafür ATE394774T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2004148901 2004-05-19

Publications (1)

Publication Number Publication Date
ATE394774T1 true ATE394774T1 (de) 2008-05-15

Family

ID=35394381

Family Applications (1)

Application Number Title Priority Date Filing Date
AT05744114T ATE394774T1 (de) 2004-05-19 2005-05-17 Kodierungs-, dekodierungsvorrichtung und methode dafür

Country Status (9)

Country Link
US (2) US8463602B2 (de)
EP (3) EP1742202B1 (de)
JP (2) JP5013863B2 (de)
KR (1) KR20070012832A (de)
CN (2) CN102280109B (de)
AT (1) ATE394774T1 (de)
BR (1) BRPI0510400A (de)
DE (1) DE602005006551D1 (de)
WO (1) WO2005112001A1 (de)

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Also Published As

Publication number Publication date
JP5013863B2 (ja) 2012-08-29
BRPI0510400A (pt) 2007-10-23
US8463602B2 (en) 2013-06-11
KR20070012832A (ko) 2007-01-29
CN1954363A (zh) 2007-04-25
US20130246075A1 (en) 2013-09-19
CN102280109A (zh) 2011-12-14
CN102280109B (zh) 2016-04-27
EP1742202A4 (de) 2007-10-10
CN1954363B (zh) 2011-10-12
US8688440B2 (en) 2014-04-01
JP5230782B2 (ja) 2013-07-10
WO2005112001A1 (ja) 2005-11-24
JPWO2005112001A1 (ja) 2008-03-27
DE602005006551D1 (de) 2008-06-19
EP3118849B1 (de) 2020-01-01
EP1742202B1 (de) 2008-05-07
EP1939862B1 (de) 2016-10-05
US20080262835A1 (en) 2008-10-23
JP2011248378A (ja) 2011-12-08
EP1939862A1 (de) 2008-07-02
EP1742202A1 (de) 2007-01-10
EP3118849A1 (de) 2017-01-18

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