DE69432012T2 - Wahrnehmungsgebundene Kodierung von Audiosignalen - Google Patents

Wahrnehmungsgebundene Kodierung von Audiosignalen

Info

Publication number
DE69432012T2
DE69432012T2 DE69432012T DE69432012T DE69432012T2 DE 69432012 T2 DE69432012 T2 DE 69432012T2 DE 69432012 T DE69432012 T DE 69432012T DE 69432012 T DE69432012 T DE 69432012T DE 69432012 T2 DE69432012 T2 DE 69432012T2
Authority
DE
Germany
Prior art keywords
audio signals
perceptual coding
perceptual
coding
audio
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
DE69432012T
Other languages
English (en)
Other versions
DE69432012D1 (de
Inventor
James David Johnston
Deepen Sinha
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.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69432012D1 publication Critical patent/DE69432012D1/de
Publication of DE69432012T2 publication Critical patent/DE69432012T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S3/00—Systems employing more than two channels, e.g. quadraphonic
    • H04S3/02—Systems employing more than two channels, e.g. quadraphonic of the matrix type, i.e. in which input signals are combined algebraically, e.g. after having been phase shifted with respect to each other
    • 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
    • H04B1/665—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 psychoacoustic properties of the ear, e.g. masking effect
DE69432012T 1993-11-23 1994-11-16 Wahrnehmungsgebundene Kodierung von Audiosignalen Expired - Lifetime DE69432012T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/156,495 US5488665A (en) 1993-11-23 1993-11-23 Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels

Publications (2)

Publication Number Publication Date
DE69432012D1 DE69432012D1 (de) 2003-02-20
DE69432012T2 true DE69432012T2 (de) 2003-11-06

Family

ID=22559816

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69432012T Expired - Lifetime DE69432012T2 (de) 1993-11-23 1994-11-16 Wahrnehmungsgebundene Kodierung von Audiosignalen

Country Status (6)

Country Link
US (2) US5488665A (de)
EP (1) EP0655876B1 (de)
JP (1) JP3970342B2 (de)
KR (1) KR100351219B1 (de)
CA (1) CA2117829C (de)
DE (1) DE69432012T2 (de)

Families Citing this family (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5632005A (en) * 1991-01-08 1997-05-20 Ray Milton Dolby Encoder/decoder for multidimensional sound fields
US5488665A (en) * 1993-11-23 1996-01-30 At&T Corp. Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels
DE4405659C1 (de) * 1994-02-22 1995-04-06 Fraunhofer Ges Forschung Verfahren zum kaskadierten Codieren und Decodieren von Audiodaten
JP2842276B2 (ja) * 1995-02-24 1998-12-24 日本電気株式会社 広帯域信号符号化装置
KR0174085B1 (ko) * 1995-08-09 1999-04-01 조백제 다채널 오디오 복호화기의 복합 디코딩장치
KR100346734B1 (ko) * 1995-09-22 2002-11-23 삼성전자 주식회사 고속분석필터및합성필터를구비한오디오부호화기및복호화기
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
US5734729A (en) * 1996-01-17 1998-03-31 Compaq Computer Corporation Apparatus for eliminating audio noise when power is cycled to a computer
WO1997038493A1 (en) * 1996-04-10 1997-10-16 Philips Electronics N.V. Encoding of a plurality of information signals
DE69718735T2 (de) * 1996-04-10 2003-11-13 Koninkl Philips Electronics Nv Kodiervorrichtung zum kodieren einer vielzahl von informationssignalen
CN1106085C (zh) * 1996-04-26 2003-04-16 德国汤姆逊-布朗特公司 对数字音频信号编码的方法和装置
EP0803989B1 (de) * 1996-04-26 1999-06-16 Deutsche Thomson-Brandt Gmbh Verfahren und Apparat zur Kodierung eines digitalen Audiosignals
DE19628292B4 (de) 1996-07-12 2007-08-02 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren zum Codieren und Decodieren von Stereoaudiospektralwerten
JP3215053B2 (ja) * 1996-09-11 2001-10-02 富士通株式会社 移動通信装置
US5864813A (en) * 1996-12-20 1999-01-26 U S West, Inc. Method, system and product for harmonic enhancement of encoded audio signals
US6463405B1 (en) 1996-12-20 2002-10-08 Eliot M. Case Audiophile encoding of digital audio data using 2-bit polarity/magnitude indicator and 8-bit scale factor for each subband
US6782365B1 (en) 1996-12-20 2004-08-24 Qwest Communications International Inc. Graphic interface system and product for editing encoded audio data
US6477496B1 (en) 1996-12-20 2002-11-05 Eliot M. Case Signal synthesis by decoding subband scale factors from one audio signal and subband samples from different one
US5864820A (en) * 1996-12-20 1999-01-26 U S West, Inc. Method, system and product for mixing of encoded audio signals
US5845251A (en) * 1996-12-20 1998-12-01 U S West, Inc. Method, system and product for modifying the bandwidth of subband encoded audio data
US6516299B1 (en) 1996-12-20 2003-02-04 Qwest Communication International, Inc. Method, system and product for modifying the dynamic range of encoded audio signals
TW429700B (en) * 1997-02-26 2001-04-11 Sony Corp Information encoding method and apparatus, information decoding method and apparatus and information recording medium
US5946352A (en) * 1997-05-02 1999-08-31 Texas Instruments Incorporated Method and apparatus for downmixing decoded data streams in the frequency domain prior to conversion to the time domain
US6111844A (en) * 1997-07-03 2000-08-29 At&T Corp. Quality degradation through compression/decompression
US6266419B1 (en) * 1997-07-03 2001-07-24 At&T Corp. Custom character-coding compression for encoding and watermarking media content
JP3279228B2 (ja) 1997-08-09 2002-04-30 日本電気株式会社 符号化音声復号装置
US6091773A (en) * 1997-11-12 2000-07-18 Sydorenko; Mark R. Data compression method and apparatus
US6405338B1 (en) * 1998-02-11 2002-06-11 Lucent Technologies Inc. Unequal error protection for perceptual audio coders
US6141645A (en) * 1998-05-29 2000-10-31 Acer Laboratories Inc. Method and device for down mixing compressed audio bit stream having multiple audio channels
US6122619A (en) * 1998-06-17 2000-09-19 Lsi Logic Corporation Audio decoder with programmable downmixing of MPEG/AC-3 and method therefor
US20060265091A1 (en) * 1998-08-14 2006-11-23 Bruce Mihura Audio entertainment system for storing and playing audio information
SE519552C2 (sv) * 1998-09-30 2003-03-11 Ericsson Telefon Ab L M Flerkanalig signalkodning och -avkodning
JP4835642B2 (ja) * 1998-10-13 2011-12-14 日本ビクター株式会社 音声符号化方法及び音声復号方法
US6931372B1 (en) * 1999-01-27 2005-08-16 Agere Systems Inc. Joint multiple program coding for digital audio broadcasting and other applications
US6735561B1 (en) * 2000-03-29 2004-05-11 At&T Corp. Effective deployment of temporal noise shaping (TNS) filters
ATE387044T1 (de) * 2000-07-07 2008-03-15 Nokia Siemens Networks Oy Verfahren und vorrichtung für die perzeptuelle tonkodierung von einem mehrkanal tonsignal mit verwendung der kaskadierten diskreten cosinustransformation oder der modifizierten diskreten cosinustransformation
US6934676B2 (en) * 2001-05-11 2005-08-23 Nokia Mobile Phones Ltd. Method and system for inter-channel signal redundancy removal in perceptual audio coding
AUPR647501A0 (en) * 2001-07-19 2001-08-09 Vast Audio Pty Ltd Recording a three dimensional auditory scene and reproducing it for the individual listener
AU2002325063B2 (en) * 2001-07-19 2007-11-01 Personal Audio Pty Ltd Recording a three dimensional auditory scene and reproducing it for the individual listener
US6987889B1 (en) 2001-08-10 2006-01-17 Polycom, Inc. System and method for dynamic perceptual coding of macroblocks in a video frame
US6975774B2 (en) * 2002-03-18 2005-12-13 Tektronix, Inc. Quantifying perceptual information and entropy
US7426462B2 (en) * 2003-09-29 2008-09-16 Sony Corporation Fast codebook selection method in audio encoding
US7283968B2 (en) * 2003-09-29 2007-10-16 Sony Corporation Method for grouping short windows in audio encoding
US7349842B2 (en) * 2003-09-29 2008-03-25 Sony Corporation Rate-distortion control scheme in audio encoding
US7325023B2 (en) * 2003-09-29 2008-01-29 Sony Corporation Method of making a window type decision based on MDCT data in audio encoding
DE102004009954B4 (de) * 2004-03-01 2005-12-15 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Verarbeiten eines Multikanalsignals
DE102005010057A1 (de) * 2005-03-04 2006-09-07 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zum Erzeugen eines codierten Stereo-Signals eines Audiostücks oder Audiodatenstroms
KR100707186B1 (ko) * 2005-03-24 2007-04-13 삼성전자주식회사 오디오 부호화 및 복호화 장치와 그 방법 및 기록 매체
US7418394B2 (en) * 2005-04-28 2008-08-26 Dolby Laboratories Licensing Corporation Method and system for operating audio encoders utilizing data from overlapping audio segments
KR100718132B1 (ko) * 2005-06-24 2007-05-14 삼성전자주식회사 오디오 신호의 비트스트림 생성 방법 및 장치, 그를 이용한부호화/복호화 방법 및 장치
US7917176B2 (en) * 2006-02-14 2011-03-29 Nec Laboratories America, Inc. Structured codebook and successive beamforming for multiple-antenna systems
KR101186133B1 (ko) * 2006-10-10 2012-09-27 퀄컴 인코포레이티드 오디오 신호들을 인코딩 및 디코딩하는 방법 및 장치
US8041042B2 (en) * 2006-11-30 2011-10-18 Nokia Corporation Method, system, apparatus and computer program product for stereo coding
AU2009221443B2 (en) * 2008-03-04 2012-01-12 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Apparatus for mixing a plurality of input data streams
JP5122681B2 (ja) * 2008-05-23 2013-01-16 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ パラメトリックステレオアップミクス装置、パラメトリックステレオデコーダ、パラメトリックステレオダウンミクス装置、及びパラメトリックステレオエンコーダ
US8630848B2 (en) * 2008-05-30 2014-01-14 Digital Rise Technology Co., Ltd. Audio signal transient detection
JP5446258B2 (ja) * 2008-12-26 2014-03-19 富士通株式会社 オーディオ符号化装置
FR2943867A1 (fr) * 2009-03-31 2010-10-01 France Telecom Traitement d'egalisation de composantes spatiales d'un signal audio 3d
US20130253923A1 (en) * 2012-03-21 2013-09-26 Her Majesty The Queen In Right Of Canada, As Represented By The Minister Of Industry Multichannel enhancement system for preserving spatial cues
EP2830053A1 (de) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Mehrkanaliger Audiodecodierer, mehrkanaliger Audiocodierer, Verfahren und Computerprogramm mit restsignalbasierter Anpassung einer Beteiligung eines dekorrelierten Signals
EP2830052A1 (de) 2013-07-22 2015-01-28 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audiodecodierer, Audiocodierer, Verfahren zur Bereitstellung von mindestens vier Audiokanalsignalen auf Basis einer codierten Darstellung, Verfahren zur Bereitstellung einer codierten Darstellung auf Basis von mindestens vier Audiokanalsignalen und Computerprogramm mit Bandbreitenerweiterung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8700985A (nl) * 1987-04-27 1988-11-16 Philips Nv Systeem voor sub-band codering van een digitaal audiosignaal.
US5341457A (en) * 1988-12-30 1994-08-23 At&T Bell Laboratories Perceptual coding of audio signals
GB8913758D0 (en) * 1989-06-15 1989-08-02 British Telecomm Polyphonic coding
US5040217A (en) * 1989-10-18 1991-08-13 At&T Bell Laboratories Perceptual coding of audio signals
JPH0451200A (ja) * 1990-06-18 1992-02-19 Fujitsu Ltd 音声符号化方式
US5285498A (en) * 1992-03-02 1994-02-08 At&T Bell Laboratories Method and apparatus for coding audio signals based on perceptual model
CA2090052C (en) * 1992-03-02 1998-11-24 Anibal Joao De Sousa Ferreira Method and apparatus for the perceptual coding of audio signals
US5377051A (en) * 1993-01-13 1994-12-27 Hitachi America, Ltd. Digital video recorder compatible receiver with trick play image enhancement
US5488665A (en) * 1993-11-23 1996-01-30 At&T Corp. Multi-channel perceptual audio compression system with encoding mode switching among matrixed channels

Also Published As

Publication number Publication date
CA2117829C (en) 1998-06-30
EP0655876B1 (de) 2003-01-15
JP3970342B2 (ja) 2007-09-05
CA2117829A1 (en) 1995-05-24
US5488665A (en) 1996-01-30
KR100351219B1 (ko) 2003-01-24
EP0655876A1 (de) 1995-05-31
JPH07199993A (ja) 1995-08-04
US5717764A (en) 1998-02-10
KR950016011A (ko) 1995-06-17
DE69432012D1 (de) 2003-02-20

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