NL7803009A - Temperatuurstabiele electreetmicrofoon. - Google Patents

Temperatuurstabiele electreetmicrofoon.

Info

Publication number
NL7803009A
NL7803009A NL7803009A NL7803009A NL7803009A NL 7803009 A NL7803009 A NL 7803009A NL 7803009 A NL7803009 A NL 7803009A NL 7803009 A NL7803009 A NL 7803009A NL 7803009 A NL7803009 A NL 7803009A
Authority
NL
Netherlands
Prior art keywords
stable electrical
temperature stable
electrical microphone
microphone
temperature
Prior art date
Application number
NL7803009A
Other languages
English (en)
Dutch (nl)
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 NL7803009A publication Critical patent/NL7803009A/xx

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)
NL7803009A 1977-03-23 1978-03-20 Temperatuurstabiele electreetmicrofoon. NL7803009A (nl)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
NL7803009A true NL7803009A (nl) 1978-09-26

Family

ID=20330819

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7803009A NL7803009A (nl) 1977-03-23 1978-03-20 Temperatuurstabiele electreetmicrofoon.

Country Status (13)

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

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
KR101059364B1 (ko) 2003-11-20 2011-08-24 파나소닉 주식회사 일렉트릿 및 일렉트릿 컨덴서
JP4264103B2 (ja) * 2004-03-03 2009-05-13 パナソニック株式会社 エレクトレットコンデンサーマイクロホン
CN1926918B (zh) 2004-03-05 2011-06-01 松下电器产业株式会社 驻极体电容器
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 (da) * 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
FR2385288B1 (da) 1984-03-23
CH626765A5 (da) 1981-11-30
DK142340B (da) 1980-10-13
IT7821534A0 (it) 1978-03-23
CA1084153A (en) 1980-08-19
NO781052L (no) 1978-09-26
FR2385288A1 (fr) 1978-10-20
US4142073A (en) 1979-02-27
AU3425478A (en) 1979-09-20
IT1093606B (it) 1985-07-19
NO140450C (no) 1979-08-29
DE2810813A1 (de) 1978-09-28
ES468174A1 (es) 1979-01-01
SE398588B (sv) 1977-12-27
NO140450B (no) 1979-05-21
DK128378A (da) 1978-09-24
AU516257B2 (en) 1981-05-28
DK142340C (da) 1981-03-23
GB1575874A (en) 1980-10-01

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Legal Events

Date Code Title Description
A85 Still pending on 85-01-01
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BV The patent application has lapsed