SE518039C2 - Apparat och förfarande för ökning av förståeligheten av högtalarutmatning och för ekosläckning i telefoner - Google Patents

Apparat och förfarande för ökning av förståeligheten av högtalarutmatning och för ekosläckning i telefoner

Info

Publication number
SE518039C2
SE518039C2 SE9704406A SE9704406A SE518039C2 SE 518039 C2 SE518039 C2 SE 518039C2 SE 9704406 A SE9704406 A SE 9704406A SE 9704406 A SE9704406 A SE 9704406A SE 518039 C2 SE518039 C2 SE 518039C2
Authority
SE
Sweden
Prior art keywords
signal
reverberation
intelligibility
telephone
direct
Prior art date
Application number
SE9704406A
Other languages
English (en)
Swedish (sv)
Other versions
SE9704406L (sv
SE9704406D0 (sv
Inventor
Jim Rasmusson
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of SE9704406D0 publication Critical patent/SE9704406D0/xx
Publication of SE9704406L publication Critical patent/SE9704406L/
Publication of SE518039C2 publication Critical patent/SE518039C2/sv

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
SE9704406A 1995-05-30 1997-11-28 Apparat och förfarande för ökning av förståeligheten av högtalarutmatning och för ekosläckning i telefoner SE518039C2 (sv)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/452,904 US5636272A (en) 1995-05-30 1995-05-30 Apparatus amd method for increasing the intelligibility of a loudspeaker output and for echo cancellation in telephones
PCT/US1996/007875 WO1996038973A1 (en) 1995-05-30 1996-05-30 Apparatus and method for increasing the intelligibility of a loudspeaker output and for echo cancellation in telephones

Publications (3)

Publication Number Publication Date
SE9704406D0 SE9704406D0 (sv) 1997-11-28
SE9704406L SE9704406L (sv) 1998-01-21
SE518039C2 true SE518039C2 (sv) 2002-08-20

Family

ID=23798435

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9704406A SE518039C2 (sv) 1995-05-30 1997-11-28 Apparat och förfarande för ökning av förståeligheten av högtalarutmatning och för ekosläckning i telefoner

Country Status (8)

Country Link
US (1) US5636272A (pt)
CN (1) CN1191650A (pt)
AU (1) AU5938496A (pt)
BR (1) BR9608862A (pt)
DE (1) DE19681415T1 (pt)
GB (1) GB2317072B (pt)
SE (1) SE518039C2 (pt)
WO (1) WO1996038973A1 (pt)

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US6199158B1 (en) 1998-12-16 2001-03-06 Nokia Mobile Phones Ltd. Method and apparatus for configuring variant software for electronic devices
EP1210765B1 (en) 1999-07-28 2007-03-07 Clear Audio Ltd. Filter banked gain control of audio in a noisy environment
WO2002015395A1 (en) * 2000-07-27 2002-02-21 Clear Audio Ltd. Voice enhancement system
JP2002169581A (ja) * 2000-11-29 2002-06-14 Matsushita Electric Ind Co Ltd 音声合成方法およびその装置
US6785382B2 (en) * 2001-02-12 2004-08-31 Signalworks, Inc. System and method for controlling a filter to enhance speakerphone performance
US7027591B2 (en) * 2002-10-16 2006-04-11 Ericsson Inc. Integrated noise cancellation and residual echo suppression
US8457614B2 (en) * 2005-04-07 2013-06-04 Clearone Communications, Inc. Wireless multi-unit conference phone
JP4875090B2 (ja) * 2005-09-20 2012-02-15 テレフオンアクチーボラゲット エル エム エリクソン（パブル） 音声明瞭度を測定するための方法およびテスト信号
CN101001293B (zh) * 2006-01-13 2010-04-21 讯强通讯科技股份有限公司 无线耳机通讯中回音的消除方法
US8081766B2 (en) * 2006-03-06 2011-12-20 Loud Technologies Inc. Creating digital signal processing (DSP) filters to improve loudspeaker transient response
US8199927B1 (en) 2007-10-31 2012-06-12 ClearOnce Communications, Inc. Conferencing system implementing echo cancellation and push-to-talk microphone detection using two-stage frequency filter
US8050398B1 (en) 2007-10-31 2011-11-01 Clearone Communications, Inc. Adaptive conferencing pod sidetone compensator connecting to a telephonic device having intermittent sidetone
CN101453532B (zh) * 2007-11-30 2013-03-20 博通集成电路（上海）有限公司 用于扬声器开关中的声音处理装置
JP5627241B2 (ja) * 2008-01-21 2014-11-19 パナソニック株式会社 音声信号処理装置および方法
CN102314933A (zh) * 2010-07-08 2012-01-11 宏碁股份有限公司 多媒体播放设备及产生多媒体播放设备的输出信号的方法
CN103796135B (zh) * 2012-10-31 2018-06-19 马克西姆综合产品公司 具有回声消除的动态扬声器管理
WO2014088659A1 (en) * 2012-12-06 2014-06-12 Intel Corporation New carrier type (nct) information embedded in synchronization signal
WO2015130257A1 (en) 2014-02-25 2015-09-03 Intel Corporation Apparatus, system and method of simultaneous transmit and receive (str) wireless communication
US9923592B2 (en) 2015-12-26 2018-03-20 Intel Corporation Echo cancellation using minimal complexity in a device
EP3273608B1 (en) * 2016-07-20 2022-01-12 Sennheiser Electronic GmbH & Co. KG An adaptive filter unit for being used as an echo canceller
US9865274B1 (en) * 2016-12-22 2018-01-09 Getgo, Inc. Ambisonic audio signal processing for bidirectional real-time communication
CN113019479A (zh) * 2021-03-31 2021-06-25 中国人民解放军空军军医大学 一种用于模拟井下工作环境的试验箱

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DE1147982B (de) * 1960-08-13 1963-05-02 Blaupunkt Werke Gmbh Anordnung zur Musikwiedergabe in einem Kraftfahrzeug
US3300583A (en) * 1963-05-13 1967-01-24 Motorola Inc Automobile speaker system with reverberation
JPS583430A (ja) * 1981-06-30 1983-01-10 Nec Corp まわり込信号抑圧装置
JPS6281197A (ja) * 1985-10-03 1987-04-14 Nissan Motor Co Ltd 音場改善装置
JPS644200A (en) * 1987-06-26 1989-01-09 Nissan Motor Sound field improving device
DE3734447C1 (de) * 1987-10-12 1989-05-18 Telefonbau & Normalzeit Gmbh Konferenz-Freisprecheinrichtung
US4922530A (en) * 1988-03-18 1990-05-01 Tellabs, Inc. Adaptive filter with coefficient averaging and method
JPH01319360A (ja) * 1988-06-20 1989-12-25 Nec Corp 音声会議装置
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US5173924A (en) * 1990-05-21 1992-12-22 Sony Corporation Method for equalizing received burst signal
JPH04149598A (ja) * 1990-10-12 1992-05-22 Pioneer Electron Corp 音場補正装置
AU659842B2 (en) * 1991-06-13 1995-06-01 Nec Corporation Method and arrangement of echo elimination in digital telecommunications system
JP3089082B2 (ja) * 1991-07-10 2000-09-18 シャープ株式会社 適応型ディジタルフィルタ
CA2052351C (en) * 1991-09-27 2000-05-23 Gordon J. Reesor Telephone handsfree algorithm
EP0543568A2 (en) * 1991-11-22 1993-05-26 AT&T Corp. High resolution filtering using low resolution processors
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JP2780576B2 (ja) * 1992-08-05 1998-07-30 日本電気株式会社 干渉波除去装置
EP0599402B1 (fr) * 1992-11-25 2001-10-10 Koninklijke Philips Electronics N.V. Dispositif d'annulation d'écho, système et poste de télécommunication comportant un tel dispositif
DE4305256A1 (de) * 1993-02-20 1994-08-25 Sel Alcatel Ag Verfahren zum Verbessern der akustischen Rückhördämpfung von elektroakustischen Anlagen
US5323458A (en) * 1993-10-25 1994-06-21 Motorola Inc. Echo cancellation in a full-duplex speakerphone

Also Published As

Publication number Publication date
AU5938496A (en) 1996-12-18
SE9704406L (sv) 1998-01-21
SE9704406D0 (sv) 1997-11-28
WO1996038973A1 (en) 1996-12-05
DE19681415T1 (de) 1998-06-18
CN1191650A (zh) 1998-08-26
GB2317072A (en) 1998-03-11
BR9608862A (pt) 1999-06-15
GB2317072B (en) 2000-05-03
GB9724624D0 (en) 1998-01-21
US5636272A (en) 1997-06-03

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