JPS5754399Y2 - - Google Patents

Info

Publication number
JPS5754399Y2
JPS5754399Y2 JP1978020575U JP2057578U JPS5754399Y2 JP S5754399 Y2 JPS5754399 Y2 JP S5754399Y2 JP 1978020575 U JP1978020575 U JP 1978020575U JP 2057578 U JP2057578 U JP 2057578U JP S5754399 Y2 JPS5754399 Y2 JP S5754399Y2
Authority
JP
Japan
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
JP1978020575U
Other versions
JPS54123825U (ja
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
Priority to JP1978020575U priority Critical patent/JPS5754399Y2/ja
Priority to GB7905145A priority patent/GB2015299B/en
Priority to US06/012,789 priority patent/US4236051A/en
Priority to DE19792906497 priority patent/DE2906497A1/de
Publication of JPS54123825U publication Critical patent/JPS54123825U/ja
Application granted granted Critical
Publication of JPS5754399Y2 publication Critical patent/JPS5754399Y2/ja
Priority to SG95/83A priority patent/SG9583G/en
Priority to HK303/83A priority patent/HK30383A/xx
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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets
    • H04R19/016—Electrostatic transducers characterised by the use of electrets for microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
JP1978020575U 1978-02-20 1978-02-20 Expired JPS5754399Y2 (ja)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP1978020575U JPS5754399Y2 (ja) 1978-02-20 1978-02-20
GB7905145A GB2015299B (en) 1978-02-20 1979-02-14 Electret microphone
US06/012,789 US4236051A (en) 1978-02-20 1979-02-16 Electret microphone
DE19792906497 DE2906497A1 (de) 1978-02-20 1979-02-20 Elektretmikrophon
SG95/83A SG9583G (en) 1978-02-20 1983-03-04 Electret microphone
HK303/83A HK30383A (en) 1978-02-20 1983-08-25 Elecret microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1978020575U JPS5754399Y2 (ja) 1978-02-20 1978-02-20

Publications (2)

Publication Number Publication Date
JPS54123825U JPS54123825U (ja) 1979-08-30
JPS5754399Y2 true JPS5754399Y2 (ja) 1982-11-25

Family

ID=12030992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1978020575U Expired JPS5754399Y2 (ja) 1978-02-20 1978-02-20

Country Status (6)

Country Link
US (1) US4236051A (ja)
JP (1) JPS5754399Y2 (ja)
DE (1) DE2906497A1 (ja)
GB (1) GB2015299B (ja)
HK (1) HK30383A (ja)
SG (1) SG9583G (ja)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029161B (en) * 1978-08-21 1983-01-26 Hosiden Electronics Co Electret microphone
JPS5756640Y2 (ja) * 1978-09-30 1982-12-06
US4331840A (en) * 1980-02-22 1982-05-25 Lectret S.A. Electret transducer with tapered acoustic chamber
JPS622879Y2 (ja) * 1981-03-25 1987-01-22
US4516428A (en) * 1982-10-28 1985-05-14 Pan Communications, Inc. Acceleration vibration detector
US4891843A (en) * 1983-02-24 1990-01-02 At&T Technologies, Inc. Electret microphone
EP0132039A3 (en) * 1983-06-09 1986-07-23 Robert Bacon Pepper Moisture resistant cover for an electroacoustic transducer
US4764690A (en) * 1986-06-18 1988-08-16 Lectret S.A. Electret transducing
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
US7415121B2 (en) 2004-10-29 2008-08-19 Sonion Nederland B.V. Microphone with internal damping
JP4396573B2 (ja) 2005-05-10 2010-01-13 セイコーエプソン株式会社 ロール紙搬送装置および印刷装置
JP4366342B2 (ja) 2005-07-08 2009-11-18 ホシデン株式会社 実装基板及びそれに載置されるマイクロホン
KR101764314B1 (ko) * 2011-10-24 2017-08-04 한국전자통신연구원 음향 센서 및 그 제조 방법

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3588382A (en) * 1967-10-11 1971-06-28 Northern Electric Co Directional electret transducer
JPS5252581Y1 (ja) * 1970-10-08 1977-11-30
SE362571B (ja) * 1971-12-02 1973-12-10 Ericsson Telefon Ab L M
JPS4861126A (ja) * 1971-12-02 1973-08-27
US3816671A (en) * 1972-04-06 1974-06-11 Thermo Electron Corp Electret transducer cartridge and case
NL7313455A (nl) * 1973-10-01 1975-04-03 Philips Nv Mikrofoon met elektrostatische capsule.
US3896274A (en) * 1973-10-04 1975-07-22 Thermo Electron Corp Electret earphone
US4046974A (en) * 1976-10-01 1977-09-06 Bell Telephone Laboratories, Incorporated Electroacoustic transducer with springs forming electrical interconnections as a result of assembly

Also Published As

Publication number Publication date
GB2015299A (en) 1979-09-05
GB2015299B (en) 1982-05-06
JPS54123825U (ja) 1979-08-30
DE2906497C2 (ja) 1988-06-16
HK30383A (en) 1983-09-02
SG9583G (en) 1983-12-16
DE2906497A1 (de) 1979-08-23
US4236051A (en) 1980-11-25

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