JPS5566199A - Electret microphone - Google Patents

Electret microphone

Info

Publication number
JPS5566199A
JPS5566199A JP14138379A JP14138379A JPS5566199A JP S5566199 A JPS5566199 A JP S5566199A JP 14138379 A JP14138379 A JP 14138379A JP 14138379 A JP14138379 A JP 14138379A JP S5566199 A JPS5566199 A JP S5566199A
Authority
JP
Japan
Prior art keywords
electret microphone
electret
microphone
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.)
Pending
Application number
JP14138379A
Other languages
English (en)
Japanese (ja)
Inventor
Jiyozefu Mooreru Ronarudo
Uiriamu Gabu Bebarii
Jiyonasu Doragunebi Orugaadasu
Aabuin Doran Buruusu
Jiyosefu Uoshitsuku Jiyaseku
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 Telecom 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 Telecom Ltd filed Critical Northern Telecom Ltd
Publication of JPS5566199A publication Critical patent/JPS5566199A/ja
Pending 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
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
JP14138379A 1978-11-03 1979-11-02 Electret microphone Pending JPS5566199A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA315,771A CA1107382A (fr) 1978-11-03 1978-11-03 Microphone a electret a raccords electriques simplifies sur plaquette de circuit imprime

Publications (1)

Publication Number Publication Date
JPS5566199A true JPS5566199A (en) 1980-05-19

Family

ID=4112877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14138379A Pending JPS5566199A (en) 1978-11-03 1979-11-02 Electret microphone

Country Status (5)

Country Link
EP (1) EP0012176A1 (fr)
JP (1) JPS5566199A (fr)
BR (1) BR7907133A (fr)
CA (1) CA1107382A (fr)
ES (1) ES485653A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086012A1 (fr) * 2002-04-11 2003-10-16 Rion Co.,Ltd Convertisseur electroacoustique

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE428081B (sv) * 1981-10-07 1983-05-30 Ericsson Telefon Ab L M Tilledningsram for en elektretmikrofon
US4492825A (en) * 1982-07-28 1985-01-08 At&T Bell Laboratories Electroacoustic transducer
SE438233B (sv) * 1983-08-19 1985-04-01 Ericsson Telefon Ab L M Elektretmikrofon
DK62484D0 (da) * 1984-02-13 1984-02-13 Gnt Automatic As Kombineret transducerenhed til mikrotelefon
GB2231235B (en) * 1989-05-05 1993-11-10 Transfer Technology Ltd Electroacoustical transducer
US6842964B1 (en) 2000-09-29 2005-01-18 Tucker Davis Technologies, Inc. Process of manufacturing of electrostatic speakers

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1252258C2 (de) * 1965-04-13 1974-06-20 Nach dem elektrostatischen prinzip arbeitender elektroakustischer wandler und verfahren zu seiner herstellung
GB1268654A (en) * 1969-08-12 1972-03-29 Plessey Co Ltd Electroacoustic transducers
US3663768A (en) * 1971-01-15 1972-05-16 Northern Electric Co Electret transducer
JPS4861126A (fr) * 1971-12-02 1973-08-27
DE2257680A1 (de) * 1971-12-11 1973-06-14 Primo Co Ltd Manufacturers & M Kompaktmikrophon
FR2220952A1 (fr) * 1973-03-07 1974-10-04 Arvin Ind Inc
JPS5419172B2 (fr) * 1973-07-23 1979-07-13
CH583489A5 (en) * 1975-01-07 1976-12-31 Gfeller Ag Apparate Fabrik Fla Microphone capsule for telephone - has preamplifier filter and main amplifier coupled to electret microphone
NL7802688A (nl) * 1978-03-13 1979-09-17 Philips Nv Inrichting voor het omzetten van akoestische in elektrische trillingen en omgekeerd, voor- zien van tenminste een kondensator elektreet- element aangesloten op een elektronische schakeling.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003086012A1 (fr) * 2002-04-11 2003-10-16 Rion Co.,Ltd Convertisseur electroacoustique
US6804363B2 (en) 2002-04-11 2004-10-12 Rion Co., Ltd. Electroacoustic transducer

Also Published As

Publication number Publication date
CA1107382A (fr) 1981-08-18
ES485653A1 (es) 1980-05-16
EP0012176A1 (fr) 1980-06-25
BR7907133A (pt) 1980-07-22

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