DE69124034T2 - Verfahren zur Verarbeitung von Audiosignalen in einem Teilbandkodiersystem - Google Patents

Verfahren zur Verarbeitung von Audiosignalen in einem Teilbandkodiersystem

Info

Publication number
DE69124034T2
DE69124034T2 DE69124034T DE69124034T DE69124034T2 DE 69124034 T2 DE69124034 T2 DE 69124034T2 DE 69124034 T DE69124034 T DE 69124034T DE 69124034 T DE69124034 T DE 69124034T DE 69124034 T2 DE69124034 T2 DE 69124034T2
Authority
DE
Germany
Prior art keywords
audio signals
coding system
processing audio
subband coding
subband
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 - Fee Related
Application number
DE69124034T
Other languages
English (en)
Other versions
DE69124034D1 (de
Inventor
Mihoko Satoh
Hideaki Ebisawa
Yushi Naito
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of DE69124034D1 publication Critical patent/DE69124034D1/de
Application granted granted Critical
Publication of DE69124034T2 publication Critical patent/DE69124034T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/561—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities by multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Telephonic Communication Services (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
DE69124034T 1990-08-28 1991-08-28 Verfahren zur Verarbeitung von Audiosignalen in einem Teilbandkodiersystem Expired - Fee Related DE69124034T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2225869A JP2598159B2 (ja) 1990-08-28 1990-08-28 音声信号処理装置

Publications (2)

Publication Number Publication Date
DE69124034D1 DE69124034D1 (de) 1997-02-20
DE69124034T2 true DE69124034T2 (de) 1997-07-31

Family

ID=16836126

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69124034T Expired - Fee Related DE69124034T2 (de) 1990-08-28 1991-08-28 Verfahren zur Verarbeitung von Audiosignalen in einem Teilbandkodiersystem

Country Status (4)

Country Link
US (1) US5280561A (de)
EP (1) EP0475196B1 (de)
JP (1) JP2598159B2 (de)
DE (1) DE69124034T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509439B1 (de) * 2008-12-19 2013-05-15 Siemens Entpr Communications Verfahren und mittel zur skalierbaren verbesserung der qualität eines signalcodierverfahrens

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2838946B2 (ja) * 1992-08-25 1998-12-16 三菱電機株式会社 多地点間音声通信装置
JPH08102687A (ja) * 1994-09-29 1996-04-16 Yamaha Corp 音声送受信方式
US6006108A (en) * 1996-01-31 1999-12-21 Qualcomm Incorporated Digital audio processing in a dual-mode telephone
FR2802329B1 (fr) * 1999-12-08 2003-03-28 France Telecom Procede de traitement d'au moins un flux binaire audio code organise sous la forme de trames
CN1264382C (zh) * 1999-12-24 2006-07-12 皇家菲利浦电子有限公司 多通道音频信号处理装置和方法
US6587682B2 (en) * 2001-01-18 2003-07-01 Polycom, Inc. Signal routing for reduced power consumption in a conferencing system
US7619995B1 (en) * 2003-07-18 2009-11-17 Nortel Networks Limited Transcoders and mixers for voice-over-IP conferencing
US7483369B2 (en) * 2003-09-30 2009-01-27 Avaya Inc. Method and apparatus for migrating to an alternate call controller
US7460656B2 (en) * 2003-12-18 2008-12-02 Intel Corporation Distributed processing in conference call systems
US7366110B2 (en) * 2004-09-30 2008-04-29 Avaya Technology Corp. Method and apparatus for merging call components during call reconstruction
US7706576B1 (en) 2004-12-28 2010-04-27 Avaya Inc. Dynamic video equalization of images using face-tracking
US7613106B2 (en) * 2005-01-04 2009-11-03 Avaya Inc. Dial plan transparency for fragmented networks
US20060146859A1 (en) * 2005-01-04 2006-07-06 Avaya Technology Corp. Alternate routing of media connections within a single communications system across public or private network facilities
US8462637B1 (en) 2005-01-04 2013-06-11 Sheridan Ross P.C. Dial plan routing for fragmented networks
US7496056B2 (en) * 2005-01-04 2009-02-24 Avaya Inc. Conference connections using dynamic topology switching for IP and circuit-switched fabrics
US7457249B2 (en) * 2005-01-04 2008-11-25 Avaya, Inc. Alternate routing of media connections within a single communications system across public or private network facilities
US7564793B2 (en) * 2005-01-04 2009-07-21 Avaya Inc. In-band call association signaling for a single number destination
US7460150B1 (en) 2005-03-14 2008-12-02 Avaya Inc. Using gaze detection to determine an area of interest within a scene
US7564476B1 (en) 2005-05-13 2009-07-21 Avaya Inc. Prevent video calls based on appearance
US7668304B2 (en) * 2006-01-25 2010-02-23 Avaya Inc. Display hierarchy of participants during phone call
US8433050B1 (en) 2006-02-06 2013-04-30 Avaya Inc. Optimizing conference quality with diverse codecs
US8165282B1 (en) 2006-05-25 2012-04-24 Avaya Inc. Exploiting facial characteristics for improved agent selection
JP5267257B2 (ja) * 2009-03-23 2013-08-21 沖電気工業株式会社 音声ミキシング装置、方法及びプログラム、並びに、音声会議システム
KR102243688B1 (ko) 2013-04-05 2021-04-27 돌비 인터네셔널 에이비 인터리브된 파형 코딩을 위한 오디오 인코더 및 디코더

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1184023B (it) * 1985-12-17 1987-10-22 Cselt Centro Studi Lab Telecom Procedimento e dispositivo per la codifica e decodifica del segnale vocale mediante analisi a sottobande e quantizzazione vettorariale con allocazione dinamica dei bit di codifica
DE3683767D1 (de) * 1986-04-30 1992-03-12 Ibm Sprachkodierungsverfahren und einrichtung zur ausfuehrung dieses verfahrens.
JPH07123270B2 (ja) * 1986-11-13 1995-12-25 旭化成マイクロシステム株式会社 電話会議装置
US5007093A (en) * 1987-04-03 1991-04-09 At&T Bell Laboratories Adaptive threshold voiced detector
FR2623677B1 (fr) * 1987-11-20 1993-05-28 Prescom Sarl Circuit de mise en conferences d'une pluralite de participants dans des systemes de telecommunications
US4953160A (en) * 1988-02-24 1990-08-28 Integrated Network Corporation Digital data over voice communication
US4989246A (en) * 1989-03-22 1991-01-29 Industrial Technology Research Institute, R.O.C. Adaptive differential, pulse code modulation sound generator
JPH0332228A (ja) * 1989-06-29 1991-02-12 Fujitsu Ltd ゲイン―シェイプ・ベクトル量子化方式
US5054075A (en) * 1989-09-05 1991-10-01 Motorola, Inc. Subband decoding method and apparatus
US4975657A (en) * 1989-11-02 1990-12-04 Motorola Inc. Speech detector for automatic level control systems

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT509439B1 (de) * 2008-12-19 2013-05-15 Siemens Entpr Communications Verfahren und mittel zur skalierbaren verbesserung der qualität eines signalcodierverfahrens
US8774312B2 (en) 2008-12-19 2014-07-08 Siemens Enterprise Communications Gmbh & Co. Kg Method and means for the scalable improvement of the quality of a signal encoding method

Also Published As

Publication number Publication date
JP2598159B2 (ja) 1997-04-09
DE69124034D1 (de) 1997-02-20
EP0475196B1 (de) 1997-01-08
EP0475196A2 (de) 1992-03-18
US5280561A (en) 1994-01-18
EP0475196A3 (en) 1993-03-17
JPH04151953A (ja) 1992-05-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee