JP2006503319A - 信号フィルタリング - Google Patents

信号フィルタリング Download PDF

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Publication number
JP2006503319A
JP2006503319A JP2004544517A JP2004544517A JP2006503319A JP 2006503319 A JP2006503319 A JP 2006503319A JP 2004544517 A JP2004544517 A JP 2004544517A JP 2004544517 A JP2004544517 A JP 2004544517A JP 2006503319 A JP2006503319 A JP 2006503319A
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JP
Japan
Prior art keywords
filter response
information signal
frame
frequency domain
signal
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Application number
JP2004544517A
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English (en)
Japanese (ja)
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JP2006503319A5 (enExample
Inventor
ディルク ジェイ ブリーバールト
エリク ジー ピー スヘイエルス
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of JP2006503319A publication Critical patent/JP2006503319A/ja
Publication of JP2006503319A5 publication Critical patent/JP2006503319A5/ja
Pending legal-status Critical Current

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    • 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
    • G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
    • H04S2420/03—Application of parametric coding in stereophonic audio systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels

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)
  • Mathematical Physics (AREA)
  • Quality & Reliability (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
JP2004544517A 2002-10-14 2003-04-22 信号フィルタリング Pending JP2006503319A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02079303 2002-10-14
PCT/IB2003/001660 WO2004036549A1 (en) 2002-10-14 2003-04-22 Signal filtering

Publications (2)

Publication Number Publication Date
JP2006503319A true JP2006503319A (ja) 2006-01-26
JP2006503319A5 JP2006503319A5 (enExample) 2006-06-15

Family

ID=32103949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2004544517A Pending JP2006503319A (ja) 2002-10-14 2003-04-22 信号フィルタリング

Country Status (7)

Country Link
US (1) US20060100861A1 (enExample)
EP (1) EP1554716A1 (enExample)
JP (1) JP2006503319A (enExample)
KR (1) KR20050049549A (enExample)
CN (1) CN1689070A (enExample)
AU (1) AU2003219428A1 (enExample)
WO (1) WO2004036549A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015508186A (ja) * 2012-02-23 2015-03-16 ドルビー・インターナショナル・アーベー 高周波オーディオ内容の効率的な復元のための方法およびシステム

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005024783A1 (en) * 2003-09-05 2005-03-17 Koninklijke Philips Electronics N.V. Low bit-rate audio encoding
WO2005122640A1 (en) * 2004-06-08 2005-12-22 Koninklijke Philips Electronics N.V. Coding reverberant sound signals
EP1783745B1 (en) * 2004-08-26 2009-09-09 Panasonic Corporation Multichannel signal decoding
WO2006025337A1 (ja) * 2004-08-31 2006-03-09 Matsushita Electric Industrial Co., Ltd. ステレオ信号生成装置およびステレオ信号生成方法
CN1969318B (zh) 2004-09-17 2011-11-02 松下电器产业株式会社 音频编码装置、解码装置以及方法
CN101185118B (zh) * 2005-05-26 2013-01-16 Lg电子株式会社 解码音频信号的方法和装置
US8577686B2 (en) 2005-05-26 2013-11-05 Lg Electronics Inc. Method and apparatus for decoding an audio signal
JP4988717B2 (ja) 2005-05-26 2012-08-01 エルジー エレクトロニクス インコーポレイティド オーディオ信号のデコーディング方法及び装置
WO2007032647A1 (en) 2005-09-14 2007-03-22 Lg Electronics Inc. Method and apparatus for decoding an audio signal
KR20080087909A (ko) 2006-01-19 2008-10-01 엘지전자 주식회사 신호 디코딩 방법 및 장치
JP4695197B2 (ja) 2006-01-19 2011-06-08 エルジー エレクトロニクス インコーポレイティド メディア信号の処理方法及び装置
US20090018824A1 (en) * 2006-01-31 2009-01-15 Matsushita Electric Industrial Co., Ltd. Audio encoding device, audio decoding device, audio encoding system, audio encoding method, and audio decoding method
US8296156B2 (en) 2006-02-07 2012-10-23 Lg Electronics, Inc. Apparatus and method for encoding/decoding signal
US7991495B2 (en) 2006-02-23 2011-08-02 Lg Electronics Inc. Method and apparatus for processing an audio signal
JP2009532712A (ja) 2006-03-30 2009-09-10 エルジー エレクトロニクス インコーポレイティド メディア信号処理方法及び装置
US20080235006A1 (en) 2006-08-18 2008-09-25 Lg Electronics, Inc. Method and Apparatus for Decoding an Audio Signal
BRPI0711102A2 (pt) 2006-09-29 2011-08-23 Lg Eletronics Inc métodos e aparelhos para codificar e decodificar sinais de áudio com base em objeto
MX2009006201A (es) * 2006-12-12 2009-06-22 Fraunhofer Ges Forschung Codificador, decodificador y metodos para codificar y decodificar segmentos de datos que representan una corriente de datos del dominio temporal.
JP2011004264A (ja) * 2009-06-19 2011-01-06 Fujitsu Ltd ディジタル信号処理装置およびディジタル信号処理方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4937873A (en) * 1985-03-18 1990-06-26 Massachusetts Institute Of Technology Computationally efficient sine wave synthesis for acoustic waveform processing
US5189701A (en) * 1991-10-25 1993-02-23 Micom Communications Corp. Voice coder/decoder and methods of coding/decoding
JP3310682B2 (ja) * 1992-01-21 2002-08-05 日本ビクター株式会社 音響信号の符号化方法及び再生方法
US6112169A (en) * 1996-11-07 2000-08-29 Creative Technology, Ltd. System for fourier transform-based modification of audio
US6233550B1 (en) * 1997-08-29 2001-05-15 The Regents Of The University Of California Method and apparatus for hybrid coding of speech at 4kbps
FR2768547B1 (fr) * 1997-09-18 1999-11-19 Matra Communication Procede de debruitage d'un signal de parole numerique
US6266003B1 (en) * 1998-08-28 2001-07-24 Sigma Audio Research Limited Method and apparatus for signal processing for time-scale and/or pitch modification of audio signals
US6084170A (en) * 1999-09-08 2000-07-04 Creative Technology Ltd. Optimal looping for wavetable synthesis

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2015508186A (ja) * 2012-02-23 2015-03-16 ドルビー・インターナショナル・アーベー 高周波オーディオ内容の効率的な復元のための方法およびシステム
US9666200B2 (en) 2012-02-23 2017-05-30 Dolby International Ab Methods and systems for efficient recovery of high frequency audio content
US9984695B2 (en) 2012-02-23 2018-05-29 Dolby International Ab Methods and systems for efficient recovery of high frequency audio content

Also Published As

Publication number Publication date
KR20050049549A (ko) 2005-05-25
CN1689070A (zh) 2005-10-26
WO2004036549A1 (en) 2004-04-29
AU2003219428A1 (en) 2004-05-04
US20060100861A1 (en) 2006-05-11
EP1554716A1 (en) 2005-07-20

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