NO140450C - Temperaturstabil elektretmikrofon. - Google Patents

Temperaturstabil elektretmikrofon.

Info

Publication number
NO140450C
NO140450C NO781052A NO781052A NO140450C NO 140450 C NO140450 C NO 140450C NO 781052 A NO781052 A NO 781052A NO 781052 A NO781052 A NO 781052A NO 140450 C NO140450 C NO 140450C
Authority
NO
Norway
Prior art keywords
temperature stable
stable electric
electric microphone
microphone
temperature
Prior art date
Application number
NO781052A
Other languages
English (en)
Norwegian (no)
Other versions
NO140450B (no
NO781052L (no
Inventor
Nils-Erik Agneus
Hans-Eric Maansson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of NO781052L publication Critical patent/NO781052L/no
Publication of NO140450B publication Critical patent/NO140450B/no
Publication of NO140450C publication Critical patent/NO140450C/no

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)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
NO781052A 1977-03-23 1978-03-22 Temperaturstabil elektretmikrofon. NO140450C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7703355A SE398588B (sv) 1977-03-23 1977-03-23 Temperaturstabil elektretmikrofon

Publications (3)

Publication Number Publication Date
NO781052L NO781052L (no) 1978-09-26
NO140450B NO140450B (no) 1979-05-21
NO140450C true NO140450C (no) 1979-08-29

Family

ID=20330819

Family Applications (1)

Application Number Title Priority Date Filing Date
NO781052A NO140450C (no) 1977-03-23 1978-03-22 Temperaturstabil elektretmikrofon.

Country Status (13)

Country Link
US (1) US4142073A (zh)
AU (1) AU516257B2 (zh)
CA (1) CA1084153A (zh)
CH (1) CH626765A5 (zh)
DE (1) DE2810813A1 (zh)
DK (1) DK142340B (zh)
ES (1) ES468174A1 (zh)
FR (1) FR2385288A1 (zh)
GB (1) GB1575874A (zh)
IT (1) IT1093606B (zh)
NL (1) NL7803009A (zh)
NO (1) NO140450C (zh)
SE (1) SE398588B (zh)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5442595A (en) * 1994-04-22 1995-08-15 Xecutek Corporation Capacitance-type ultrasonic transducer
DE19703311A1 (de) * 1997-01-30 1998-08-06 Sennheiser Electronic Grenzflächenmikrofon
DE19715365C2 (de) * 1997-04-11 1999-03-25 Sennheiser Electronic Kondensatormikrofon
US6741709B2 (en) * 2000-12-20 2004-05-25 Shure Incorporated Condenser microphone assembly
US7062058B2 (en) * 2001-04-18 2006-06-13 Sonion Nederland B.V. Cylindrical microphone having an electret assembly in the end cover
EP1686599A4 (en) 2003-11-20 2009-04-15 Panasonic Corp ELECTRIC AND ELECTRIC CAPACITOR
WO2005086534A1 (ja) * 2004-03-03 2005-09-15 Matsushita Electric Industrial Co., Ltd. エレクトレットコンデンサーマイクロフォンユニット
JP4137158B2 (ja) * 2004-03-05 2008-08-20 松下電器産業株式会社 エレクトレットコンデンサーマイクロフォン
US9247331B2 (en) 2009-06-29 2016-01-26 Nokia Technologoies Oy Temperature compensated microphone

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3328653A (en) * 1966-09-22 1967-06-27 Budd Co Thin film pressure transducer
USRE28420E (en) * 1967-05-15 1975-05-13 Blbctret acoustic transducer
US3821490A (en) * 1970-10-09 1974-06-28 Chester C Pond Electroacoustic transducer especially electrostatic speakers and systems
SE362571B (zh) * 1971-12-02 1973-12-10 Ericsson Telefon Ab L M
SE7410408L (sv) * 1974-08-15 1976-01-19 Ericsson Telefon Ab L M Forfarande for framstellning av en elektretmikrofon med ett noggrant bestemt luftgap.
US4070741A (en) * 1976-09-27 1978-01-31 Genrad Inc. Method of making an electret acoustic transducer
US4063050A (en) * 1976-12-30 1977-12-13 Industrial Research Products, Inc. Acoustic transducer with improved electret assembly

Also Published As

Publication number Publication date
SE398588B (sv) 1977-12-27
GB1575874A (en) 1980-10-01
IT1093606B (it) 1985-07-19
DK142340C (zh) 1981-03-23
FR2385288A1 (fr) 1978-10-20
FR2385288B1 (zh) 1984-03-23
IT7821534A0 (it) 1978-03-23
CH626765A5 (zh) 1981-11-30
AU3425478A (en) 1979-09-20
NO140450B (no) 1979-05-21
NO781052L (no) 1978-09-26
NL7803009A (nl) 1978-09-26
DK142340B (da) 1980-10-13
DE2810813A1 (de) 1978-09-28
AU516257B2 (en) 1981-05-28
ES468174A1 (es) 1979-01-01
DK128378A (zh) 1978-09-24
CA1084153A (en) 1980-08-19
US4142073A (en) 1979-02-27

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