CH676770A5 - - Google Patents

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Publication number
CH676770A5
CH676770A5 CH1810/88A CH181088A CH676770A5 CH 676770 A5 CH676770 A5 CH 676770A5 CH 1810/88 A CH1810/88 A CH 1810/88A CH 181088 A CH181088 A CH 181088A CH 676770 A5 CH676770 A5 CH 676770A5
Authority
CH
Switzerland
Prior art keywords
counter electrode
membrane
support ring
housing
sound
Prior art date
Application number
CH1810/88A
Other languages
German (de)
English (en)
Inventor
Peter L Madaffari
Elmer V Carlson
Original Assignee
Knowles Electronics 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 Knowles Electronics Inc filed Critical Knowles Electronics Inc
Publication of CH676770A5 publication Critical patent/CH676770A5/de

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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
CH1810/88A 1986-09-15 1987-09-04 CH676770A5 (US07498051-20090303-C00003.png)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US06/907,498 US4730283A (en) 1986-09-15 1986-09-15 Acoustic transducer with improved electrode spacing

Publications (1)

Publication Number Publication Date
CH676770A5 true CH676770A5 (US07498051-20090303-C00003.png) 1991-02-28

Family

ID=25424198

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1810/88A CH676770A5 (US07498051-20090303-C00003.png) 1986-09-15 1987-09-04

Country Status (9)

Country Link
US (1) US4730283A (US07498051-20090303-C00003.png)
JP (1) JPS63503505A (US07498051-20090303-C00003.png)
CA (1) CA1294032C (US07498051-20090303-C00003.png)
CH (1) CH676770A5 (US07498051-20090303-C00003.png)
DE (2) DE3790540T (US07498051-20090303-C00003.png)
DK (1) DK167299B1 (US07498051-20090303-C00003.png)
GB (1) GB2200013B (US07498051-20090303-C00003.png)
NL (1) NL190915C (US07498051-20090303-C00003.png)
WO (1) WO1988002208A1 (US07498051-20090303-C00003.png)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE33718E (en) * 1986-09-15 1991-10-15 Knowles Electronics, Inc. Acoustic transducer with improved electrode spacing
US4867267A (en) * 1987-10-14 1989-09-19 Industrial Research Products, Inc. Hearing aid transducer
JPH02149199A (ja) * 1988-11-30 1990-06-07 Matsushita Electric Ind Co Ltd エレクトレットコンデンサマイクロホン
US5101543A (en) * 1990-07-02 1992-04-07 Gentex Corporation Method of making a variable capacitor microphone
NL9101563A (nl) * 1991-09-17 1993-04-16 Microtel Bv Elektroacoustische transducent van het elektreet type.
US5335286A (en) * 1992-02-18 1994-08-02 Knowles Electronics, Inc. Electret assembly
US5450498A (en) * 1993-07-14 1995-09-12 The University Of British Columbia High pressure low impedance electrostatic transducer
US5548658A (en) * 1994-06-06 1996-08-20 Knowles Electronics, Inc. Acoustic Transducer
US5570428A (en) * 1994-09-27 1996-10-29 Tibbetts Industries, Inc. Transducer assembly
DE19612481C2 (de) * 1996-03-29 2003-11-13 Sennheiser Electronic Elektrostatischer Wandler
NL1002880C2 (nl) * 1996-04-16 1997-10-17 Microtronic Nederland Bv Elektroakoestische transducent.
US6093144A (en) * 1997-12-16 2000-07-25 Symphonix Devices, Inc. Implantable microphone having improved sensitivity and frequency response
US6532293B1 (en) 2000-02-08 2003-03-11 Knowles Electronics Llc Acoustical transducer with reduced parasitic capacitance
KR200218653Y1 (ko) * 2000-11-01 2001-04-02 주식회사비에스이 일렉트렛 콘덴서 마이크로폰
US7065224B2 (en) * 2001-09-28 2006-06-20 Sonionmicrotronic Nederland B.V. Microphone for a hearing aid or listening device with improved internal damping and foreign material protection
DE10297066B4 (de) * 2002-04-11 2006-08-31 Rion Co., Ltd. Elektroakustischer Wandler
US7072482B2 (en) 2002-09-06 2006-07-04 Sonion Nederland B.V. Microphone with improved sound inlet port
US7184563B2 (en) * 2003-03-04 2007-02-27 Knowles Electronics Llc. Electret condenser microphone
US7751579B2 (en) * 2003-06-13 2010-07-06 Etymotic Research, Inc. Acoustically transparent debris barrier for audio transducers
US7415121B2 (en) * 2004-10-29 2008-08-19 Sonion Nederland B.V. Microphone with internal damping
US9398389B2 (en) 2013-05-13 2016-07-19 Knowles Electronics, Llc Apparatus for securing components in an electret condenser microphone (ECM)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425481A (en) * 1943-09-21 1947-08-12 Reeves Hoffman Corp Quartz oscillator plateholder
US3588382A (en) * 1967-10-11 1971-06-28 Northern Electric Co Directional electret transducer
JPS5654711Y2 (US07498051-20090303-C00003.png) * 1976-06-11 1981-12-19
US4063050A (en) * 1976-12-30 1977-12-13 Industrial Research Products, Inc. Acoustic transducer with improved electret assembly
JPS5399975U (US07498051-20090303-C00003.png) * 1977-01-14 1978-08-12
US4321432A (en) * 1978-12-23 1982-03-23 Tokyo Shibaura Denki Kabushiki Kaisha Electrostatic microphone
US4246449A (en) * 1979-04-24 1981-01-20 Polaroid Corporation Electrostatic transducer having optimum sensitivity and damping
US4310906A (en) * 1979-12-21 1982-01-12 The United States Of America As Represented By The Administrator, National Aeronautics And Space Administration Liquid-immersible electrostatic ultrasonic transducer
US4331840A (en) * 1980-02-22 1982-05-25 Lectret S.A. Electret transducer with tapered acoustic chamber
US4418246A (en) * 1980-10-29 1983-11-29 Tibbetts Industries, Inc. Cell assembly for electret transducer
AT374326B (de) * 1982-07-22 1984-04-10 Akg Akustische Kino Geraete Elektrostatischer wandler, insbesondere kondensatormikrophon
JPS5936078U (ja) * 1982-08-31 1984-03-06 凸版印刷株式会社 ブツクケ−ス型容器

Also Published As

Publication number Publication date
US4730283A (en) 1988-03-08
NL190915B (nl) 1994-05-16
GB2200013B (en) 1990-04-11
DE3790540C2 (de) 1991-11-14
WO1988002208A1 (en) 1988-03-24
GB2200013A (en) 1988-07-20
GB8721675D0 (en) 1987-10-21
NL8720483A (nl) 1988-08-01
DK167299B1 (da) 1993-10-04
CA1294032C (en) 1992-01-07
DE3790540T (US07498051-20090303-C00003.png) 1988-09-15
JPS63503505A (ja) 1988-12-15
NL190915C (nl) 1994-10-17
DK265388A (da) 1988-05-13
DK265388D0 (da) 1988-05-13

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Legal Events

Date Code Title Description
PUE Assignment

Owner name: KNOWLES ELECTRONICS, INC. TRANSFER- KNOWLES ELECTR

PL Patent ceased