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FR1568515A - - Google Patents

Info

Publication number
FR1568515A
FR1568515A FR1568515DA FR1568515A FR 1568515 A FR1568515 A FR 1568515A FR 1568515D A FR1568515D A FR 1568515DA FR 1568515 A FR1568515 A FR 1568515A
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.)
Expired
Application number
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 filed Critical
Application granted granted Critical
Publication of FR1568515A publication Critical patent/FR1568515A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
FR1568515D 1967-06-05 1968-05-31 Expired FR1568515A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW44116A DE1277347B (de) 1967-06-05 1967-06-05 Mikrophon fuer Hoergeraete

Publications (1)

Publication Number Publication Date
FR1568515A true FR1568515A (fr) 1969-05-23

Family

ID=7603933

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1568515D Expired FR1568515A (fr) 1967-06-05 1968-05-31

Country Status (9)

Country Link
US (1) US3662124A (fr)
AT (1) AT309551B (fr)
BE (1) BE716073A (fr)
CH (1) CH491575A (fr)
DE (1) DE1277347B (fr)
ES (1) ES353937A1 (fr)
FR (1) FR1568515A (fr)
GB (1) GB1180865A (fr)
NL (1) NL6807102A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1278009A (en) * 1970-10-22 1972-06-14 Standard Telephones Cables Ltd Microphone
US3749853A (en) * 1972-05-18 1973-07-31 Zenith Radio Corp Hearing aid with directional microphone system
NL7306005A (fr) * 1973-05-01 1974-11-05
US3963881A (en) * 1973-05-29 1976-06-15 Thermo Electron Corporation Unidirectional condenser microphone
US4903249A (en) * 1988-03-24 1990-02-20 Nelson Industries Rigid foraminous microphone probe for acoustic measurement in turbulent flow
US6031922A (en) * 1995-12-27 2000-02-29 Tibbetts Industries, Inc. Microphone systems of reduced in situ acceleration sensitivity
US7881486B1 (en) * 1996-12-31 2011-02-01 Etymotic Research, Inc. Directional microphone assembly
US5878147A (en) 1996-12-31 1999-03-02 Etymotic Research, Inc. Directional microphone assembly
US6151399A (en) 1996-12-31 2000-11-21 Etymotic Research, Inc. Directional microphone system providing for ease of assembly and disassembly
ATE548862T1 (de) 2000-10-05 2012-03-15 Etymotic Res Inc Richtmikrofonbaugruppe
US7894618B2 (en) * 2006-07-28 2011-02-22 Symphony Acoustics, Inc. Apparatus comprising a directionality-enhanced acoustic sensor
US7832080B2 (en) * 2007-10-11 2010-11-16 Etymotic Research, Inc. Directional microphone assembly
US8630435B2 (en) * 2008-08-08 2014-01-14 Nokia Corporation Apparatus incorporating an adsorbent material, and methods of making same
KR101786434B1 (ko) 2014-07-31 2017-10-17 쓰리엠 이노베이티브 프로퍼티즈 캄파니 귀 장착형 청력 장치 내의 내수성 음향 포트

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL67077C (fr) * 1945-12-03

Also Published As

Publication number Publication date
US3662124A (en) 1972-05-09
CH491575A (de) 1970-05-31
ES353937A1 (es) 1969-10-16
GB1180865A (en) 1970-02-11
AT309551B (de) 1973-08-27
BE716073A (fr) 1968-11-04
NL6807102A (fr) 1968-12-06
DE1277347B (de) 1968-09-12

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Legal Events

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