IT1093606B - Microfono a elettrete stabile alla temperatura - Google Patents

Microfono a elettrete stabile alla temperatura

Info

Publication number
IT1093606B
IT1093606B IT21534/78A IT2153478A IT1093606B IT 1093606 B IT1093606 B IT 1093606B IT 21534/78 A IT21534/78 A IT 21534/78A IT 2153478 A IT2153478 A IT 2153478A IT 1093606 B IT1093606 B IT 1093606B
Authority
IT
Italy
Prior art keywords
temperature
stable electric
electric microphone
microphone
stable
Prior art date
Application number
IT21534/78A
Other languages
English (en)
Italian (it)
Other versions
IT7821534A0 (it
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 IT7821534A0 publication Critical patent/IT7821534A0/it
Application granted granted Critical
Publication of IT1093606B publication Critical patent/IT1093606B/it

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)
IT21534/78A 1977-03-23 1978-03-23 Microfono a elettrete stabile alla temperatura IT1093606B (it)

Applications Claiming Priority (1)

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

Publications (2)

Publication Number Publication Date
IT7821534A0 IT7821534A0 (it) 1978-03-23
IT1093606B true IT1093606B (it) 1985-07-19

Family

ID=20330819

Family Applications (1)

Application Number Title Priority Date Filing Date
IT21534/78A IT1093606B (it) 1977-03-23 1978-03-23 Microfono a elettrete stabile alla temperatura

Country Status (13)

Country Link
US (1) US4142073A (US07413550-20080819-C00001.png)
AU (1) AU516257B2 (US07413550-20080819-C00001.png)
CA (1) CA1084153A (US07413550-20080819-C00001.png)
CH (1) CH626765A5 (US07413550-20080819-C00001.png)
DE (1) DE2810813A1 (US07413550-20080819-C00001.png)
DK (1) DK142340B (US07413550-20080819-C00001.png)
ES (1) ES468174A1 (US07413550-20080819-C00001.png)
FR (1) FR2385288A1 (US07413550-20080819-C00001.png)
GB (1) GB1575874A (US07413550-20080819-C00001.png)
IT (1) IT1093606B (US07413550-20080819-C00001.png)
NL (1) NL7803009A (US07413550-20080819-C00001.png)
NO (1) NO140450C (US07413550-20080819-C00001.png)
SE (1) SE398588B (US07413550-20080819-C00001.png)

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 (US07413550-20080819-C00001.png) * 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
CA1084153A (en) 1980-08-19
AU516257B2 (en) 1981-05-28
NO140450B (no) 1979-05-21
AU3425478A (en) 1979-09-20
ES468174A1 (es) 1979-01-01
DK142340B (da) 1980-10-13
US4142073A (en) 1979-02-27
DK142340C (US07413550-20080819-C00001.png) 1981-03-23
DK128378A (US07413550-20080819-C00001.png) 1978-09-24
SE398588B (sv) 1977-12-27
GB1575874A (en) 1980-10-01
NO781052L (no) 1978-09-26
FR2385288A1 (fr) 1978-10-20
DE2810813A1 (de) 1978-09-28
NO140450C (no) 1979-08-29
CH626765A5 (US07413550-20080819-C00001.png) 1981-11-30
IT7821534A0 (it) 1978-03-23
NL7803009A (nl) 1978-09-26
FR2385288B1 (US07413550-20080819-C00001.png) 1984-03-23

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