DE69940800D1 - Verfahren und Vorrichtung zur echounterdruckung - Google Patents

Verfahren und Vorrichtung zur echounterdruckung

Info

Publication number
DE69940800D1
DE69940800D1 DE69940800T DE69940800T DE69940800D1 DE 69940800 D1 DE69940800 D1 DE 69940800D1 DE 69940800 T DE69940800 T DE 69940800T DE 69940800 T DE69940800 T DE 69940800T DE 69940800 D1 DE69940800 D1 DE 69940800D1
Authority
DE
Germany
Prior art keywords
echo
printing
echo printing
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
DE69940800T
Other languages
English (en)
Inventor
Tae-Wook Moon
He-Sun Cho
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.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Application granted granted Critical
Publication of DE69940800D1 publication Critical patent/DE69940800D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
  • Stereophonic System (AREA)
  • Amplifiers (AREA)
DE69940800T 1998-11-04 1999-11-04 Verfahren und Vorrichtung zur echounterdruckung Expired - Lifetime DE69940800D1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1019980047094A KR100283170B1 (ko) 1998-11-04 1998-11-04 반향제거 장치 및 방법

Publications (1)

Publication Number Publication Date
DE69940800D1 true DE69940800D1 (de) 2009-06-10

Family

ID=19557100

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69940800T Expired - Lifetime DE69940800D1 (de) 1998-11-04 1999-11-04 Verfahren und Vorrichtung zur echounterdruckung

Country Status (5)

Country Link
US (1) US6771771B1 (de)
EP (1) EP0999689B1 (de)
KR (1) KR100283170B1 (de)
CN (1) CN1157995C (de)
DE (1) DE69940800D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6487178B1 (en) * 1999-05-12 2002-11-26 Ericsson Inc. Methods and apparatus for providing volume control in communicating systems including a linear echo canceler
JP2002050986A (ja) * 2000-08-03 2002-02-15 Matsushita Electric Ind Co Ltd エコーキャンセル方法及びエコーキャンセル装置
US20070047731A1 (en) * 2005-08-31 2007-03-01 Acoustic Technologies, Inc. Clipping detector for echo cancellation
JP4765117B2 (ja) * 2006-03-02 2011-09-07 オンセミコンダクター・トレーディング・リミテッド エコー防止回路、フィルタ係数設定方法、及びプログラム
CN102726013B (zh) * 2011-03-14 2015-01-21 苏州全波通信技术有限公司 用于覆盖补点的同频转发器的回波消除系统及其方法
CN109823369B (zh) * 2018-12-28 2020-09-04 上海鸣啸信息科技股份有限公司 一种基于Linux平台的列车乘客紧急报警器
KR102207608B1 (ko) 2019-04-24 2021-01-26 윤종오 카르복실산으로 유기화된 규소 이온 복합체 및 복합체의 제조방법과 이를 이용한 제품

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2612029B1 (fr) 1987-03-03 1989-05-12 Connan Jean Louis Dispositif pour la realisation de la fonction " mains-libres " dans un poste telephonique, associant les fonctions de commutation de gain et d'annulation d'echo
US4991166A (en) * 1988-10-28 1991-02-05 Shure Brothers Incorporated Echo reduction circuit
US5016271A (en) 1989-05-30 1991-05-14 At&T Bell Laboratories Echo canceler-suppressor speakerphone
FR2676881A1 (fr) 1991-05-21 1992-11-27 Telecommunications Sa Procede pour optimiser la qualite des communications telephoniques.
US5857019A (en) 1996-06-11 1999-01-05 Siemens Business Communication Systems, Inc. Apparatus and method for providing a telephone user with control of the threshold volume at which the user's voice will take control of a half-duplex speakerphone conversation
US5796818A (en) 1996-08-08 1998-08-18 Northern Telecom Limited Dynamic optimization of handsfree microphone gain
US5787165A (en) * 1996-12-13 1998-07-28 Ericsson Inc. Handsfree radiotelephone having dynamic path attenuation control for echo suppression
US6147979A (en) * 1997-08-12 2000-11-14 Lucent Technologies, Inc. System and method for echo cancellation in a communication system

Also Published As

Publication number Publication date
KR20000031185A (ko) 2000-06-05
CN1157995C (zh) 2004-07-14
US6771771B1 (en) 2004-08-03
CN1255821A (zh) 2000-06-07
KR100283170B1 (ko) 2001-03-02
EP0999689A1 (de) 2000-05-10
EP0999689B1 (de) 2009-04-29

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition