DE60233032D1 - Audio-kodierer und audio-dekodierer - Google Patents

Audio-kodierer und audio-dekodierer

Info

Publication number
DE60233032D1
DE60233032D1 DE60233032T DE60233032T DE60233032D1 DE 60233032 D1 DE60233032 D1 DE 60233032D1 DE 60233032 T DE60233032 T DE 60233032T DE 60233032 T DE60233032 T DE 60233032T DE 60233032 D1 DE60233032 D1 DE 60233032D1
Authority
DE
Germany
Prior art keywords
audio
coders
decoders
audio decoders
audio coders
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE60233032T
Other languages
English (en)
Inventor
Mineo Tsushima
Takeshi Norimatsu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Original Assignee
Panasonic Corp
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 Panasonic Corp filed Critical Panasonic Corp
Application granted granted Critical
Publication of DE60233032D1 publication Critical patent/DE60233032D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • G10L19/028—Noise substitution, i.e. substituting non-tonal spectral components by noisy source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE60233032T 2001-03-02 2002-01-24 Audio-kodierer und audio-dekodierer Expired - Lifetime DE60233032D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001057746 2001-03-02
PCT/JP2002/000524 WO2002071395A2 (en) 2001-03-02 2002-01-24 Apparatus for coding scaling factors in an audio coder

Publications (1)

Publication Number Publication Date
DE60233032D1 true DE60233032D1 (de) 2009-09-03

Family

ID=18917573

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60233032T Expired - Lifetime DE60233032D1 (de) 2001-03-02 2002-01-24 Audio-kodierer und audio-dekodierer

Country Status (7)

Country Link
US (1) US6922667B2 (de)
EP (1) EP1364364B1 (de)
CN (1) CN1232951C (de)
AU (1) AU2002226717B2 (de)
DE (1) DE60233032D1 (de)
MX (1) MXPA02010770A (de)
WO (1) WO2002071395A2 (de)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0103242D0 (en) * 2001-02-09 2001-03-28 Radioscape Ltd Method of analysing a compressed signal for the presence or absence of information content
JP3861770B2 (ja) * 2002-08-21 2006-12-20 ソニー株式会社 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
JP4657570B2 (ja) * 2002-11-13 2011-03-23 ソニー株式会社 音楽情報符号化装置及び方法、音楽情報復号装置及び方法、並びにプログラム及び記録媒体
US7650277B2 (en) * 2003-01-23 2010-01-19 Ittiam Systems (P) Ltd. System, method, and apparatus for fast quantization in perceptual audio coders
CN100507485C (zh) * 2003-10-23 2009-07-01 松下电器产业株式会社 频谱编码装置和频谱解码装置
JP4899359B2 (ja) * 2005-07-11 2012-03-21 ソニー株式会社 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
RU2464650C2 (ru) * 2006-12-13 2012-10-20 Панасоник Корпорэйшн Устройство и способ кодирования, устройство и способ декодирования
JP5339919B2 (ja) * 2006-12-15 2013-11-13 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
KR101411900B1 (ko) * 2007-05-08 2014-06-26 삼성전자주식회사 오디오 신호의 부호화 및 복호화 방법 및 장치
EP4407610A1 (de) * 2008-07-11 2024-07-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audiocodierer, audiodecodierer, verfahren zur codierung und decodierung eines audiosignals, audiostrom und computerprogramm
JP6035270B2 (ja) * 2014-03-24 2016-11-30 株式会社Ｎｔｔドコモ 音声復号装置、音声符号化装置、音声復号方法、音声符号化方法、音声復号プログラム、および音声符号化プログラム
EP2980801A1 (de) 2014-07-28 2016-02-03 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zur Schätzung des Rauschens in einem Audiosignal, Rauschschätzer, Audiocodierer, Audiodecodierer und System zur Übertragung von Audiosignalen
US10033709B1 (en) * 2017-11-20 2018-07-24 Microsoft Technology Licensing, Llc Method and apparatus for improving privacy of communications through channels having excess capacity

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3196595B2 (ja) * 1995-09-27 2001-08-06 日本電気株式会社 音声符号化装置
US5692102A (en) * 1995-10-26 1997-11-25 Motorola, Inc. Method device and system for an efficient noise injection process for low bitrate audio compression
DE19730130C2 (de) * 1997-07-14 2002-02-28 Fraunhofer Ges Forschung Verfahren zum Codieren eines Audiosignals
JP3319396B2 (ja) * 1998-07-13 2002-08-26 日本電気株式会社 音声符号化装置ならびに音声符号化復号化装置
JP2001075600A (ja) * 1999-09-07 2001-03-23 Mitsubishi Electric Corp 音声符号化装置および音声復号化装置

Also Published As

Publication number Publication date
US20020152085A1 (en) 2002-10-17
WO2002071395A2 (en) 2002-09-12
EP1364364B1 (de) 2009-07-22
AU2002226717B2 (en) 2004-05-06
WO2002071395A3 (en) 2002-11-21
CN1461468A (zh) 2003-12-10
CN1232951C (zh) 2005-12-21
US6922667B2 (en) 2005-07-26
MXPA02010770A (es) 2004-09-06
EP1364364A2 (de) 2003-11-26

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Legal Events

Date Code Title Description
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP

8364 No opposition during term of opposition