BRPI0510014A - dispositivo de codificação, dispositivo de decodificação e método do mesmo - Google Patents

dispositivo de codificação, dispositivo de decodificação e método do mesmo

Info

Publication number
BRPI0510014A
BRPI0510014A BRPI0510014-3A BRPI0510014A BRPI0510014A BR PI0510014 A BRPI0510014 A BR PI0510014A BR PI0510014 A BRPI0510014 A BR PI0510014A BR PI0510014 A BRPI0510014 A BR PI0510014A
Authority
BR
Brazil
Prior art keywords
spectrum
band
dynamic range
modification
coding
Prior art date
Application number
BRPI0510014-3A
Other languages
English (en)
Inventor
Masahiro Oshikiri
Hiroyuki Ehara
Original Assignee
Matsushita Electric Industrial 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 Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of BRPI0510014A publication Critical patent/BRPI0510014A/pt
Publication of BRPI0510014B1 publication Critical patent/BRPI0510014B1/pt

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
    • 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
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
    • 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
    • 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
    • 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
    • G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
    • G10L21/0324—Details of processing therefor
    • G10L21/0332—Details of processing therefor involving modification of waveforms

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

DISPOSITIVO DE CODIFICAçãO, DISPOSITIVO DE DECODIFICAçãO E MéTODO DO MESMO. A presente invenção refere-se a um dispositivo de codificação capaz de ajustar, apropriadamente, a faixa dinâmica de espectro inserido de acordo com a técnica para a substituição de um espectro de uma certa banda com um espectro de outra banda. O dispositivo inclui uma unidade de modificação de espectro (112), que modifica um primeiro espectro S1(k) da banda O "= k < FL de várias maneiras, para mudar a faixa dinâmica de modo que uma maneira de modificação para obtenção de uma faixa dinâmica apropriada é verificada. A informação referente á modificação é codificada e fornecida para uma unidade de multiplexação (115). Através do uso de um segundo espectro S2(k), tendo uma banda de sinal válida O "= k.
BRPI0510014-3A 2004-05-14 2005-05-13 Dispositivo de codificação, dispositivo de decodificação e método do mesmo BRPI0510014B1 (pt)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
JP2004145425 2004-05-14
JP2004-145425 2004-05-14
JP2004322953 2004-11-05
JP2004-322953 2004-11-05
JP2005133729 2005-04-28
JP2005-133729 2005-04-28
PCT/JP2005/008771 WO2005111568A1 (ja) 2004-05-14 2005-05-13 符号化装置、復号化装置、およびこれらの方法

Publications (2)

Publication Number Publication Date
BRPI0510014A true BRPI0510014A (pt) 2007-09-18
BRPI0510014B1 BRPI0510014B1 (pt) 2019-03-26

Family

ID=35394267

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0510014-3A BRPI0510014B1 (pt) 2004-05-14 2005-05-13 Dispositivo de codificação, dispositivo de decodificação e método do mesmo

Country Status (6)

Country Link
US (1) US8417515B2 (pt)
EP (3) EP3336843B1 (pt)
JP (2) JP4810422B2 (pt)
KR (2) KR101143724B1 (pt)
BR (1) BRPI0510014B1 (pt)
WO (1) WO2005111568A1 (pt)

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Also Published As

Publication number Publication date
EP1744139A1 (en) 2007-01-17
KR101143724B1 (ko) 2012-05-11
EP2991075A3 (en) 2016-04-06
EP3336843B1 (en) 2021-06-23
EP1744139A4 (en) 2011-01-19
EP2991075A2 (en) 2016-03-02
JP2011043853A (ja) 2011-03-03
KR20070017524A (ko) 2007-02-12
KR20120008537A (ko) 2012-01-30
JP5371931B2 (ja) 2013-12-18
JPWO2005111568A1 (ja) 2008-03-27
EP3336843A1 (en) 2018-06-20
EP2991075B1 (en) 2018-08-01
US8417515B2 (en) 2013-04-09
US20080027733A1 (en) 2008-01-31
KR101213840B1 (ko) 2012-12-20
JP4810422B2 (ja) 2011-11-09
WO2005111568A1 (ja) 2005-11-24
EP1744139B1 (en) 2015-11-11
BRPI0510014B1 (pt) 2019-03-26

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