DE7300802U - Elektroakustischer wandler oder empfaenger mit abgeglichenem anker - Google Patents

Elektroakustischer wandler oder empfaenger mit abgeglichenem anker

Info

Publication number
DE7300802U
DE7300802U DE19737300802 DE7300802U DE7300802U DE 7300802 U DE7300802 U DE 7300802U DE 19737300802 DE19737300802 DE 19737300802 DE 7300802 U DE7300802 U DE 7300802U DE 7300802 U DE7300802 U DE 7300802U
Authority
DE
Germany
Prior art keywords
membrane
receiver
coupling
cavity
chamber
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
Application number
DE19737300802
Other languages
German (de)
English (en)
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.)
Nortel Networks Ltd
Original Assignee
Northern Electric 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 Northern Electric Co Ltd filed Critical Northern Electric Co Ltd
Publication of DE7300802U publication Critical patent/DE7300802U/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R11/00—Transducers of moving-armature or moving-core type

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
DE19737300802 1972-01-10 1973-01-10 Elektroakustischer wandler oder empfaenger mit abgeglichenem anker Expired DE7300802U (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA132093 1972-01-10

Publications (1)

Publication Number Publication Date
DE7300802U true DE7300802U (de) 1973-03-29

Family

ID=4092018

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19737300802 Expired DE7300802U (de) 1972-01-10 1973-01-10 Elektroakustischer wandler oder empfaenger mit abgeglichenem anker

Country Status (4)

Country Link
DE (1) DE7300802U (https=)
FR (1) FR2167867B1 (https=)
GB (1) GB1379372A (https=)
SE (1) SE377025B (https=)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1190993C (zh) 1997-04-17 2005-02-23 伯斯有限公司 降低有源噪声的头戴送受话器及其中使用的模块
US8571227B2 (en) 2005-11-11 2013-10-29 Phitek Systems Limited Noise cancellation earphone
US8666085B2 (en) 2007-10-02 2014-03-04 Phitek Systems Limited Component for noise reducing earphone
US9818394B2 (en) 2009-11-30 2017-11-14 Graeme Colin Fuller Realisation of controller transfer function for active noise cancellation
BR112012028245B1 (pt) 2010-05-17 2021-04-20 Phitek Systems, Ltd. unidade de suporte do módulo e unidade de exibição de vídeo
US9487295B2 (en) 2010-11-15 2016-11-08 William James Sim Vehicle media distribution system using optical transmitters
JP2014533444A (ja) 2011-06-01 2014-12-11 フィテック システムズ リミテッドＰｈｉｔｅｋ Ｓｙｓｔｅｍｓ Ｌｉｍｉｔｅｄ 能動騒音低減を組み込むインイヤー型装置
CN112122088B (zh) * 2019-06-24 2024-06-25 苏州嘉辉超声波科技有限公司 一种双曲面换能器

Also Published As

Publication number Publication date
FR2167867B1 (https=) 1976-05-14
FR2167867A1 (https=) 1973-08-24
SE377025B (https=) 1975-06-16
GB1379372A (en) 1975-01-02

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