DE69705642T2 - Audio-kodierverfahren mit veränderlicher kodelänge unter verwendung einer mehrzahl von teilband-bitverteilungsmoden - Google Patents

Audio-kodierverfahren mit veränderlicher kodelänge unter verwendung einer mehrzahl von teilband-bitverteilungsmoden

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Publication number
DE69705642T2
DE69705642T2 DE69705642T DE69705642T DE69705642T2 DE 69705642 T2 DE69705642 T2 DE 69705642T2 DE 69705642 T DE69705642 T DE 69705642T DE 69705642 T DE69705642 T DE 69705642T DE 69705642 T2 DE69705642 T2 DE 69705642T2
Authority
DE
Germany
Prior art keywords
encoding method
code length
audio encoding
multiple number
variable code
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
DE69705642T
Other languages
English (en)
Other versions
DE69705642D1 (de
Inventor
Brant Helf
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.)
Polycom Inc
Original Assignee
Picturetel 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 Picturetel Corp filed Critical Picturetel Corp
Application granted granted Critical
Publication of DE69705642D1 publication Critical patent/DE69705642D1/de
Publication of DE69705642T2 publication Critical patent/DE69705642T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
DE69705642T 1996-10-07 1997-10-06 Audio-kodierverfahren mit veränderlicher kodelänge unter verwendung einer mehrzahl von teilband-bitverteilungsmoden Expired - Lifetime DE69705642T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/726,959 US5924064A (en) 1996-10-07 1996-10-07 Variable length coding using a plurality of region bit allocation patterns
PCT/US1997/017770 WO1998015945A1 (en) 1996-10-07 1997-10-06 Variable length audio coding using a plurality of subband bit allocation patterns

Publications (2)

Publication Number Publication Date
DE69705642D1 DE69705642D1 (de) 2001-08-16
DE69705642T2 true DE69705642T2 (de) 2002-05-02

Family

ID=24920743

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69705642T Expired - Lifetime DE69705642T2 (de) 1996-10-07 1997-10-06 Audio-kodierverfahren mit veränderlicher kodelänge unter verwendung einer mehrzahl von teilband-bitverteilungsmoden

Country Status (6)

Country Link
US (1) US5924064A (de)
EP (1) EP0968497B1 (de)
JP (1) JP4237826B2 (de)
CA (1) CA2267764A1 (de)
DE (1) DE69705642T2 (de)
WO (1) WO1998015945A1 (de)

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US7099387B2 (en) * 2002-03-22 2006-08-29 Realnetorks, Inc. Context-adaptive VLC video transform coefficients encoding/decoding methods and apparatuses
US7447631B2 (en) * 2002-06-17 2008-11-04 Dolby Laboratories Licensing Corporation Audio coding system using spectral hole filling
US20030236674A1 (en) * 2002-06-19 2003-12-25 Henry Raymond C. Methods and systems for compression of stored audio
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US7536302B2 (en) * 2004-07-13 2009-05-19 Industrial Technology Research Institute Method, process and device for coding audio signals
DE102004036154B3 (de) * 2004-07-26 2005-12-22 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur robusten Klassifizierung von Audiosignalen sowie Verfahren zu Einrichtung und Betrieb einer Audiosignal-Datenbank sowie Computer-Programm
US7720232B2 (en) * 2004-10-15 2010-05-18 Lifesize Communications, Inc. Speakerphone
US8116500B2 (en) * 2004-10-15 2012-02-14 Lifesize Communications, Inc. Microphone orientation and size in a speakerphone
US7970151B2 (en) * 2004-10-15 2011-06-28 Lifesize Communications, Inc. Hybrid beamforming
US7720236B2 (en) * 2004-10-15 2010-05-18 Lifesize Communications, Inc. Updating modeling information based on offline calibration experiments
US7903137B2 (en) * 2004-10-15 2011-03-08 Lifesize Communications, Inc. Videoconferencing echo cancellers
US7760887B2 (en) * 2004-10-15 2010-07-20 Lifesize Communications, Inc. Updating modeling information based on online data gathering
US20060132595A1 (en) * 2004-10-15 2006-06-22 Kenoyer Michael L Speakerphone supporting video and audio features
US7826624B2 (en) * 2004-10-15 2010-11-02 Lifesize Communications, Inc. Speakerphone self calibration and beam forming
US7593539B2 (en) 2005-04-29 2009-09-22 Lifesize Communications, Inc. Microphone and speaker arrangement in speakerphone
US7970150B2 (en) * 2005-04-29 2011-06-28 Lifesize Communications, Inc. Tracking talkers using virtual broadside scan and directed beams
US7991167B2 (en) * 2005-04-29 2011-08-02 Lifesize Communications, Inc. Forming beams with nulls directed at noise sources
WO2007096551A2 (fr) * 2006-02-24 2007-08-30 France Telecom Procede de codage binaire d'indices de quantification d'une enveloppe d'un signal, procede de decodage d'une enveloppe d'un signal et modules de codage et decodage correspondants
US7953595B2 (en) * 2006-10-18 2011-05-31 Polycom, Inc. Dual-transform coding of audio signals
US7966175B2 (en) * 2006-10-18 2011-06-21 Polycom, Inc. Fast lattice vector quantization
US7885819B2 (en) 2007-06-29 2011-02-08 Microsoft Corporation Bitstream syntax for multi-process audio decoding
EP4235660A3 (de) 2008-07-11 2023-09-13 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Audiodecodierer, verfahren zum decodieren eines audio-signals und computerprogramm
US8386266B2 (en) * 2010-07-01 2013-02-26 Polycom, Inc. Full-band scalable audio codec
US8428959B2 (en) * 2010-01-29 2013-04-23 Polycom, Inc. Audio packet loss concealment by transform interpolation
RU2464649C1 (ru) 2011-06-01 2012-10-20 Корпорация "САМСУНГ ЭЛЕКТРОНИКС Ко., Лтд." Способ обработки звукового сигнала
KR102048076B1 (ko) 2011-09-28 2019-11-22 엘지전자 주식회사 음성 신호 부호화 방법 및 음성 신호 복호화 방법 그리고 이를 이용하는 장치
US9111524B2 (en) * 2011-12-20 2015-08-18 Dolby International Ab Seamless playback of successive multimedia files
MX346732B (es) * 2013-01-29 2017-03-30 Fraunhofer Ges Forschung Cuantificación de señales de audio adaptables por tonalidad de baja complejidad.
US10523369B2 (en) 2017-01-09 2019-12-31 Qualcomm Incorporated Mutual-information based recursive polar code construction
WO2018126496A1 (en) 2017-01-09 2018-07-12 Qualcomm Incorporated Bit allocation for encoding and decoding

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US5222189A (en) * 1989-01-27 1993-06-22 Dolby Laboratories Licensing Corporation Low time-delay transform coder, decoder, and encoder/decoder for high-quality audio
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US5317672A (en) * 1991-03-05 1994-05-31 Picturetel Corporation Variable bit rate speech encoder
ES2164640T3 (es) * 1991-08-02 2002-03-01 Sony Corp Codificador digital con asignacion dinamica de bits de cuantificacion.
JP3134455B2 (ja) * 1992-01-29 2001-02-13 ソニー株式会社 高能率符号化装置及び方法
JP3153933B2 (ja) * 1992-06-16 2001-04-09 ソニー株式会社 データ符号化装置及び方法並びにデータ復号化装置及び方法
KR100188912B1 (ko) * 1992-09-21 1999-06-01 윤종용 서브밴드코딩의 비트재할당 방법
JP3123286B2 (ja) * 1993-02-18 2001-01-09 ソニー株式会社 ディジタル信号処理装置又は方法、及び記録媒体
US5664057A (en) * 1993-07-07 1997-09-02 Picturetel Corporation Fixed bit rate speech encoder/decoder
JPH09503630A (ja) * 1993-07-07 1997-04-08 ピクチャーテル コーポレイション 固定ビットレートのスピーチエンコーダ／デコーダ
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JP2982637B2 (ja) * 1995-01-17 1999-11-29 日本電気株式会社 スペクトルパラメータを用いた音声信号伝送システムおよびそれに用いられる音声パラメータ符号化装置および復号化装置

Also Published As

Publication number Publication date
EP0968497A1 (de) 2000-01-05
WO1998015945A1 (en) 1998-04-16
US5924064A (en) 1999-07-13
JP2001502073A (ja) 2001-02-13
CA2267764A1 (en) 1998-04-16
DE69705642D1 (de) 2001-08-16
EP0968497A4 (de) 2000-02-23
JP4237826B2 (ja) 2009-03-11
EP0968497B1 (de) 2001-07-11

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