KR20040019889A - 다중 서브밴드 및 오버래핑 윈도우 기능을 사용하여처리된 오디오 신호를 인코딩 또는 디코딩하기 위한 방법및 장치 - Google Patents

다중 서브밴드 및 오버래핑 윈도우 기능을 사용하여처리된 오디오 신호를 인코딩 또는 디코딩하기 위한 방법및 장치 Download PDF

Info

Publication number
KR20040019889A
KR20040019889A KR1020030055439A KR20030055439A KR20040019889A KR 20040019889 A KR20040019889 A KR 20040019889A KR 1020030055439 A KR1020030055439 A KR 1020030055439A KR 20030055439 A KR20030055439 A KR 20030055439A KR 20040019889 A KR20040019889 A KR 20040019889A
Authority
KR
South Korea
Prior art keywords
window
subband
block
information
type
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.)
Withdrawn
Application number
KR1020030055439A
Other languages
English (en)
Korean (ko)
Inventor
발터 보에싱
Original Assignee
톰슨 라이센싱 소시에떼 아노님
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 톰슨 라이센싱 소시에떼 아노님 filed Critical 톰슨 라이센싱 소시에떼 아노님
Publication of KR20040019889A publication Critical patent/KR20040019889A/ko
Withdrawn legal-status Critical Current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
    • G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Computational Linguistics (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)
KR1020030055439A 2002-08-28 2003-08-11 다중 서브밴드 및 오버래핑 윈도우 기능을 사용하여처리된 오디오 신호를 인코딩 또는 디코딩하기 위한 방법및 장치 Withdrawn KR20040019889A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP02090308.4 2002-08-28
EP02090308A EP1394772A1 (en) 2002-08-28 2002-08-28 Signaling of window switchings in a MPEG layer 3 audio data stream

Publications (1)

Publication Number Publication Date
KR20040019889A true KR20040019889A (ko) 2004-03-06

Family

ID=31197944

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020030055439A Withdrawn KR20040019889A (ko) 2002-08-28 2003-08-11 다중 서브밴드 및 오버래핑 윈도우 기능을 사용하여처리된 오디오 신호를 인코딩 또는 디코딩하기 위한 방법및 장치

Country Status (6)

Country Link
US (1) US20040158472A1 (https=)
EP (1) EP1394772A1 (https=)
JP (1) JP2004094223A (https=)
KR (1) KR20040019889A (https=)
CN (1) CN1487746A (https=)
DE (1) DE60300500T2 (https=)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100530377B1 (ko) * 2003-12-30 2005-11-22 삼성전자주식회사 엠펙 오디오 디코더의 합성필터 및 그 디코딩 방법
ATE537536T1 (de) * 2004-10-26 2011-12-15 Panasonic Corp Sprachkodierungsvorrichtung und sprachkodierungsverfahren
KR100668319B1 (ko) * 2004-12-07 2007-01-12 삼성전자주식회사 오디오 신호의 변환방법 및 장치와 오디오 신호에적응적인 부호화방법 및 장치, 오디오 신호의 역변환 방법및 장치와 오디오 신호에 적응적인 복호화 방법 및 장치
ATE527833T1 (de) 2006-05-04 2011-10-15 Lg Electronics Inc Verbesserung von stereo-audiosignalen mittels neuabmischung
EP2084703B1 (en) * 2006-09-29 2019-05-01 LG Electronics Inc. Apparatus for processing mix signal and method thereof
JP5232791B2 (ja) 2006-10-12 2013-07-10 エルジー エレクトロニクス インコーポレイティド ミックス信号処理装置及びその方法
KR20080053739A (ko) * 2006-12-11 2008-06-16 삼성전자주식회사 적응적으로 윈도우 크기를 적용하는 부호화 장치 및 방법
WO2008151137A2 (en) * 2007-06-01 2008-12-11 The Trustees Of Columbia University In The City Of New York Real-time time encoding and decoding machines
WO2009006405A1 (en) 2007-06-28 2009-01-08 The Trustees Of Columbia University In The City Of New York Multi-input multi-output time encoding and decoding machines
PL3002750T3 (pl) * 2008-07-11 2018-06-29 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Koder i dekoder audio do kodowania i dekodowania próbek audio
EP2315358A1 (en) 2009-10-09 2011-04-27 Thomson Licensing Method and device for arithmetic encoding or arithmetic decoding
EP2372704A1 (en) * 2010-03-11 2011-10-05 Fraunhofer-Gesellschaft zur Förderung der Angewandten Forschung e.V. Signal processor and method for processing a signal
CN101894557B (zh) * 2010-06-12 2011-12-07 北京航空航天大学 一种用于aac编码的窗型判别方法
WO2012109407A1 (en) 2011-02-09 2012-08-16 The Trustees Of Columbia University In The City Of New York Encoding and decoding machine with recurrent neural networks
KR20130109793A (ko) * 2012-03-28 2013-10-08 삼성전자주식회사 잡음 감쇄를 위한 오디오 신호 부호화 방법 및 장치
US9601122B2 (en) 2012-06-14 2017-03-21 Dolby International Ab Smooth configuration switching for multichannel audio
PL2959481T3 (pl) 2013-02-20 2017-10-31 Fraunhofer Ges Forschung Urządzenie i sposób generowania zakodowanego sygnału audio lub dekodowania zakodowanego sygnału audio przy użyciu części wielozakładkowej

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5956674A (en) * 1995-12-01 1999-09-21 Digital Theater Systems, Inc. Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels
US6128597A (en) * 1996-05-03 2000-10-03 Lsi Logic Corporation Audio decoder with a reconfigurable downmixing/windowing pipeline and method therefor
US6122619A (en) * 1998-06-17 2000-09-19 Lsi Logic Corporation Audio decoder with programmable downmixing of MPEG/AC-3 and method therefor
JP2000134105A (ja) * 1998-10-29 2000-05-12 Matsushita Electric Ind Co Ltd オーディオ変換符号化に用いられるブロックサイズを決定し適応させる方法

Also Published As

Publication number Publication date
US20040158472A1 (en) 2004-08-12
CN1487746A (zh) 2004-04-07
DE60300500D1 (de) 2005-05-19
EP1394772A1 (en) 2004-03-03
DE60300500T2 (de) 2005-09-15
JP2004094223A (ja) 2004-03-25

Similar Documents

Publication Publication Date Title
US6529604B1 (en) Scalable stereo audio encoding/decoding method and apparatus
US5812971A (en) Enhanced joint stereo coding method using temporal envelope shaping
CA2199070C (en) Switched filterbank for use in audio signal coding
JP5096468B2 (ja) サイド情報なしの時間的ノイズエンベロープの自由な整形
CA2286068C (en) Method for coding an audio signal
JP3878952B2 (ja) オーディオ信号コーディング中にノイズ置換を信号で知らせる方法
JP5688862B2 (ja) 混合の可逆的音声圧縮
JP4521170B2 (ja) 純可逆的音声圧縮における技術革新
KR20040019889A (ko) 다중 서브밴드 및 오버래핑 윈도우 기능을 사용하여처리된 오디오 신호를 인코딩 또는 디코딩하기 위한 방법및 장치
Sinha et al. Audio compression at low bit rates using a signal adaptive switched filterbank
KR101449434B1 (ko) 복수의 가변장 부호 테이블을 이용한 멀티 채널 오디오를부호화/복호화하는 방법 및 장치
KR20030014752A (ko) 오디오 코딩
JP2002544550A (ja) 符号化されたオーディオ信号中のエラーを隠蔽する方法と装置および符号化されたオーディオ信号を復号化する方法と装置
KR20080066473A (ko) 대역폭 확장 부호화 및 복호화 방법 및 장치
GB2318029A (en) Predictive coding of audio signals
CN101241701A (zh) 音频解码
KR20030071622A (ko) 디지털 정보 신호의 인코딩과 디코딩을 위한 방법 및 장치
KR100472442B1 (ko) 웨이브렛 패킷 변환을 이용한 오디오 압축 방법 및 그시스템
JP3964860B2 (ja) ステレオオーディオの符号化方法、ステレオオーディオ符号化装置、ステレオオーディオの復号化方法、ステレオオーディオ復号化装置及びコンピュータで読み取り可能な記録媒体
KR100899141B1 (ko) 인코딩된 신호의 처리
Liebchen An introduction to MPEG-4 audio lossless coding
EP1187101B1 (en) Method and apparatus for preclassification of audio material in digital audio compression applications
WO2003086017A2 (en) Signal processing
EP1398760B1 (en) Signaling of window switchings in a MPEG layer 3 audio data stream
Paraskevas et al. A differential perceptual audio coding method with reduced bitrate requirements

Legal Events

Date Code Title Description
PA0109 Patent application

Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 20030811

PG1501 Laying open of application
PC1203 Withdrawal of no request for examination
WITN Application deemed withdrawn, e.g. because no request for examination was filed or no examination fee was paid