FR2167867A1 - - Google Patents

Info

Publication number
FR2167867A1
FR2167867A1 FR7300679A FR7300679A FR2167867A1 FR 2167867 A1 FR2167867 A1 FR 2167867A1 FR 7300679 A FR7300679 A FR 7300679A FR 7300679 A FR7300679 A FR 7300679A FR 2167867 A1 FR2167867 A1 FR 2167867A1
Authority
FR
France
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.)
Granted
Application number
FR7300679A
Other languages
French (fr)
Other versions
FR2167867B1 (enExample
Inventor
R C Freeman
A C Busche
K B Simonsen
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 FR2167867A1 publication Critical patent/FR2167867A1/fr
Application granted granted Critical
Publication of FR2167867B1 publication Critical patent/FR2167867B1/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; 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)
FR7300679A 1972-01-10 1973-01-10 Expired FR2167867B1 (enExample)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
FR2167867A1 true FR2167867A1 (enExample) 1973-08-24
FR2167867B1 FR2167867B1 (enExample) 1976-05-14

Family

ID=4092018

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7300679A Expired FR2167867B1 (enExample) 1972-01-10 1973-01-10

Country Status (4)

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

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
JP5265373B2 (ja) 2005-11-11 2013-08-14 フィテック システムズ リミテッド ノイズ消去イヤホン
NZ584418A (en) 2007-10-02 2012-12-21 Phitek Systems Ltd 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
EP2471710A1 (en) 2010-11-15 2012-07-04 Nigel Greig Media distribution system
CN103748903B (zh) 2011-06-01 2017-02-22 菲泰克系统有限公司 包括有源噪声降低的耳内装置
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NEANT *

Also Published As

Publication number Publication date
SE377025B (enExample) 1975-06-16
DE7300802U (de) 1973-03-29
GB1379372A (en) 1975-01-02
FR2167867B1 (enExample) 1976-05-14

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse