BRPI0414444A - aparelho de codificação e aparelho de decodificação - Google Patents

aparelho de codificação e aparelho de decodificação

Info

Publication number
BRPI0414444A
BRPI0414444A BRPI0414444-9A BRPI0414444A BRPI0414444A BR PI0414444 A BRPI0414444 A BR PI0414444A BR PI0414444 A BRPI0414444 A BR PI0414444A BR PI0414444 A BRPI0414444 A BR PI0414444A
Authority
BR
Brazil
Prior art keywords
section
coefficient
spectrum
similarity
calculates
Prior art date
Application number
BRPI0414444-9A
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34308695&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BRPI0414444(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BRPI0414444A publication Critical patent/BRPI0414444A/pt
Publication of BRPI0414444B1 publication Critical patent/BRPI0414444B1/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
    • 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
    • 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
    • G10L19/04—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
    • G10L19/09—Long term prediction, i.e. removing periodical redundancies, e.g. by using adaptive codebook or pitch predictor

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)
  • Spectroscopy & Molecular Physics (AREA)
  • Quality & Reliability (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Closures For Containers (AREA)

Abstract

"APARELHO DE CODIFICAçãO E APARELHO DE DECODIFICAçãO". Aparelho de codificação capaz de codificar um espectro em uma baixa taxa de bit e com alta qualidade sem produzir qualquer distúrbio em uma estrutura harmónica do espectro. Neste aparelho, a seção de ajuste de estado interno (106) ajusta um estado interno da seção de filtragem (107) com o uso do primeiro espectro S1(k). A seção de ajuste de coeficiente de passo (109) emite o coeficiente de passo T com a mudança gradual do mesmo. A seção de filtragem (107) calcula o valor avaliado S<39>2(k) do segundo espectro S2(k) com base no coeficiente de passo T. A seção de pesquisa (108) calcula o grau de similaridade entre S2(k) e S<39>2(k). Neste momento, o coeficiente de passo T<39> que corresponde ao grau calculado máximo de similaridade é fornecido à seção de cálculo de coeficiente de filtro (110). A seção de cálculo de coeficiente de filtro (110) determina o coeficiente de filtro <225>~ i~ com o uso deste coeficiente de passo T<39>.
BRPI0414444A 2003-09-16 2004-09-15 aparelho de codificação, aparelho de decodificação, método de codificação e método de decodificação BRPI0414444B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2003323658 2003-09-16
PCT/JP2004/013455 WO2005027095A1 (ja) 2003-09-16 2004-09-15 符号化装置および復号化装置

Publications (2)

Publication Number Publication Date
BRPI0414444A true BRPI0414444A (pt) 2006-11-14
BRPI0414444B1 BRPI0414444B1 (pt) 2020-05-05

Family

ID=34308695

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0414444A BRPI0414444B1 (pt) 2003-09-16 2004-09-15 aparelho de codificação, aparelho de decodificação, método de codificação e método de decodificação

Country Status (6)

Country Link
EP (3) EP1657710B1 (pt)
JP (2) JP4789622B2 (pt)
CN (3) CN100590712C (pt)
BR (1) BRPI0414444B1 (pt)
DE (2) DE602004032587D1 (pt)
WO (1) WO2005027095A1 (pt)

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FR2889526B1 (fr) 2005-08-04 2012-02-17 Aventis Pharma Sa 7-aza-indazoles substitues, compositions les contenant, procede de fabrication et utilisation
JP5171256B2 (ja) * 2005-08-31 2013-03-27 パナソニック株式会社 ステレオ符号化装置、ステレオ復号装置、及びステレオ符号化方法
KR101390188B1 (ko) * 2006-06-21 2014-04-30 삼성전자주식회사 적응적 고주파수영역 부호화 및 복호화 방법 및 장치
US9159333B2 (en) 2006-06-21 2015-10-13 Samsung Electronics Co., Ltd. Method and apparatus for adaptively encoding and decoding high frequency band
KR101379263B1 (ko) 2007-01-12 2014-03-28 삼성전자주식회사 대역폭 확장 복호화 방법 및 장치
JP4708446B2 (ja) 2007-03-02 2011-06-22 パナソニック株式会社 符号化装置、復号装置およびそれらの方法
JP5294713B2 (ja) * 2007-03-02 2013-09-18 パナソニック株式会社 符号化装置、復号装置およびそれらの方法
JPWO2009084221A1 (ja) * 2007-12-27 2011-05-12 パナソニック株式会社 符号化装置、復号装置およびこれらの方法
CN101552005A (zh) * 2008-04-03 2009-10-07 华为技术有限公司 编码方法、解码方法、系统及装置
CN101662288B (zh) * 2008-08-28 2012-07-04 华为技术有限公司 音频编码、解码方法及装置、系统
KR101424944B1 (ko) * 2008-12-15 2014-08-01 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 오디오 인코더 및 대역폭 확장 디코더
CN101436407B (zh) * 2008-12-22 2011-08-24 西安电子科技大学 音频编解码方法
EP2380172B1 (en) 2009-01-16 2013-07-24 Dolby International AB Cross product enhanced harmonic transposition
JP5707842B2 (ja) * 2010-10-15 2015-04-30 ソニー株式会社 符号化装置および方法、復号装置および方法、並びにプログラム
CN106847295B (zh) * 2011-09-09 2021-03-23 松下电器（美国）知识产权公司 编码装置和编码方法
PT3010018T (pt) 2013-06-11 2020-11-13 Fraunhofer Ges Forschung Dispositivo e método para extensão de largura de banda para sinais acústicos
CN104517611B (zh) * 2013-09-26 2016-05-25 华为技术有限公司 一种高频激励信号预测方法及装置
CA2958429C (en) * 2014-07-25 2020-03-10 Panasonic Intellectual Property Corporation Of America Audio signal coding apparatus, audio signal decoding apparatus, audio signal coding method, and audio signal decoding method
ES2823250T3 (es) * 2014-07-25 2021-05-06 Fraunhofer Ges Forschung Aparato de codificación de señal de audio, dispositivo de decodificación de señal de audio y métodos del mismo
EP2980797A1 (en) * 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audio decoder, method and computer program using a zero-input-response to obtain a smooth transition
EP3871216A1 (en) * 2018-10-26 2021-09-01 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Directional loudness map based audio processing

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JPH0685607A (ja) * 1992-08-31 1994-03-25 Alpine Electron Inc 高域成分復元装置
JP3483958B2 (ja) * 1994-10-28 2004-01-06 三菱電機株式会社 広帯域音声復元装置及び広帯域音声復元方法及び音声伝送システム及び音声伝送方法
JP3283413B2 (ja) * 1995-11-30 2002-05-20 株式会社日立製作所 符号化復号方法、符号化装置および復号装置
JP3243174B2 (ja) * 1996-03-21 2002-01-07 株式会社日立国際電気 狭帯域音声信号の周波数帯域拡張回路
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CA2252170A1 (en) * 1998-10-27 2000-04-27 Bruno Bessette A method and device for high quality coding of wideband speech and audio signals
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JP3881836B2 (ja) * 2000-10-24 2007-02-14 株式会社ケンウッド 周波数補間装置、周波数補間方法及び記録媒体
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JP2003108197A (ja) * 2001-07-13 2003-04-11 Matsushita Electric Ind Co Ltd オーディオ信号復号化装置およびオーディオ信号符号化装置
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JP3926726B2 (ja) * 2001-11-14 2007-06-06 松下電器産業株式会社 符号化装置および復号化装置
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Also Published As

Publication number Publication date
EP1657710B1 (en) 2009-05-27
EP2264700A1 (en) 2010-12-22
JP5171922B2 (ja) 2013-03-27
CN101783141B (zh) 2012-06-20
JP2011039553A (ja) 2011-02-24
EP2071565B1 (en) 2011-05-04
EP1657710A1 (en) 2006-05-17
JP4789622B2 (ja) 2011-10-12
CN100590712C (zh) 2010-02-17
EP1657710A4 (en) 2007-10-31
CN101800049B (zh) 2012-05-23
CN1849648A (zh) 2006-10-18
EP2071565A3 (en) 2009-07-08
CN101783141A (zh) 2010-07-21
CN101800049A (zh) 2010-08-11
WO2005027095A1 (ja) 2005-03-24
DE602004021266D1 (de) 2009-07-09
EP2071565A2 (en) 2009-06-17
DE602004032587D1 (de) 2011-06-16
BRPI0414444B1 (pt) 2020-05-05
JPWO2005027095A1 (ja) 2007-11-08

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Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: PANASONIC CORPORATION (JP)

B25A Requested transfer of rights approved

Owner name: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AME

B15K Others concerning applications: alteration of classification

Ipc: G10L 21/038 (2013.01), G10L 19/02 (2013.01)

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B06A Patent application procedure suspended [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]

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