HK54983A - Electret microphone - Google Patents

Electret microphone

Info

Publication number
HK54983A
HK54983A HK549/83A HK54983A HK54983A HK 54983 A HK54983 A HK 54983A HK 549/83 A HK549/83 A HK 549/83A HK 54983 A HK54983 A HK 54983A HK 54983 A HK54983 A HK 54983A
Authority
HK
Hong Kong
Prior art keywords
electret microphone
electret
microphone
Prior art date
Application number
HK549/83A
Other languages
English (en)
Inventor
Sadayoshi Nakagawa
Mitsuharu Shinohara
Original Assignee
Hosiden Electronics Co
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
Priority claimed from JP11491378U external-priority patent/JPS5756639Y2/ja
Priority claimed from JP1978135641U external-priority patent/JPS5813678Y2/ja
Application filed by Hosiden Electronics Co filed Critical Hosiden Electronics Co
Publication of HK54983A publication Critical patent/HK54983A/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)
HK549/83A 1978-08-21 1983-11-10 Electret microphone HK54983A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11491378U JPS5756639Y2 (ja) 1978-08-21 1978-08-21
JP1978135641U JPS5813678Y2 (ja) 1978-10-02 1978-10-02 単一指向性エレクトレツトマイクロホン

Publications (1)

Publication Number Publication Date
HK54983A true HK54983A (en) 1983-11-18

Family

ID=26453559

Family Applications (1)

Application Number Title Priority Date Filing Date
HK549/83A HK54983A (en) 1978-08-21 1983-11-10 Electret microphone

Country Status (4)

Country Link
US (1) US4268725A (ja)
DE (1) DE2933286A1 (ja)
GB (1) GB2029161B (ja)
HK (1) HK54983A (ja)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443666A (en) * 1980-11-24 1984-04-17 Gentex Corporation Electret microphone assembly
CH642504A5 (en) * 1981-06-01 1984-04-13 Asulab Sa Hybrid electroacoustic transducer
DE3134888A1 (de) * 1981-09-03 1983-03-10 Robert Bosch Gmbh, 7000 Stuttgart "hoergeraet"
FR2542552B1 (fr) * 1983-03-07 1986-04-11 Thomson Csf Transducteur electroacoustique a diaphragme piezo-electrique
SE440581B (sv) * 1983-12-22 1985-08-05 Ericsson Telefon Ab L M Forfarande for framstellning av elektroakustiska omvandlare med slutet resonansrum, foretredesvis mikrofoner, samt elektroakustisk omvandlare framstelld enligt forfarandet
US4685137A (en) * 1985-05-17 1987-08-04 Electrovoice, Inc. Microphone with non-symmetrical directivity pattern
US4764690A (en) * 1986-06-18 1988-08-16 Lectret S.A. Electret transducing
DE3630951A1 (de) * 1986-09-11 1988-03-17 Siemens Ag Anordnung zur frequenzgangverbesserung fuer elektroakustische wandler
DE4342169A1 (de) * 1993-12-10 1995-06-14 Sennheiser Electronic Elektromechanischer Wandler, wie Mikrofon
US6278377B1 (en) 1999-08-25 2001-08-21 Donnelly Corporation Indicator for vehicle accessory
CN2346131Y (zh) * 1998-07-22 1999-10-27 程滋颐 驻极体抗噪音拾音器
MXPA02004999A (es) * 1999-11-19 2003-01-28 Gentex Corp Microfono auxiliar para vehiculo.
US6882734B2 (en) 2001-02-14 2005-04-19 Gentex Corporation Vehicle accessory microphone
US8682005B2 (en) * 1999-11-19 2014-03-25 Gentex Corporation Vehicle accessory microphone
US7447320B2 (en) * 2001-02-14 2008-11-04 Gentex Corporation Vehicle accessory microphone
US6782109B2 (en) * 2000-04-04 2004-08-24 University Of Florida Electromechanical acoustic liner
AU2002210400A1 (en) * 2000-10-20 2002-04-29 Bruel & Kjaer Sound & Vibration Measurement A/S A capacitive transducer
US6944308B2 (en) * 2000-10-20 2005-09-13 Bruel & Kjaer Sound & Vibration Measurement A/S Capacitive transducer
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
JP2004075818A (ja) * 2002-08-15 2004-03-11 Fuji Photo Film Co Ltd インク組成物及びインクジェット記録方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3816671A (en) * 1972-04-06 1974-06-11 Thermo Electron Corp Electret transducer cartridge and case
DE2554777C2 (de) * 1975-12-05 1982-07-08 Rolf 6100 Darmstadt Neusel Mechanisch-elektrischer Wandler für ein Blutdruckmeßgerät
IT1066823B (it) * 1975-12-30 1985-03-12 Sits Soc It Telecom Siemens Trasduttore elettroacustico particolarmente del tipo a lamina piezoceramica
JPS5754399Y2 (ja) * 1978-02-20 1982-11-25

Also Published As

Publication number Publication date
DE2933286A1 (de) 1980-03-06
GB2029161B (en) 1983-01-26
US4268725A (en) 1981-05-19
DE2933286C2 (ja) 1988-04-07
GB2029161A (en) 1980-03-12

Similar Documents

Publication Publication Date Title
GB2104344B (en) Microphone system
GB2044037B (en) Electrostatic microphone
GB2018548B (en) Piezoelectric speaker
JPS5526700A (en) Electret
JPS5637621A (en) Electret
GB2029161B (en) Electret microphone
JPS5637620A (en) Electret
GB2022362B (en) Speaker
GB2015299B (en) Electret microphone
GB2016862B (en) Electret transducers
GB2036505B (en) Ear-supported microphone
DE2966743D1 (en) Acoustic speaker
JPS5566199A (en) Electret microphone
AU4507579A (en) Rumble-free microphone combination
GB2012520B (en) Speaker
JPS54111329A (en) Speaker
JPS5591297A (en) Loudspeaker
JPS54107726A (en) Speaker
JPS54118230A (en) Speaker
JPS54109824A (en) Speaker
JPS54155820A (en) Talking microphone
JPS54118231A (en) Speaker
JPS54147825A (en) Speaker
JPS54118232A (en) Speaker
JPS54116916A (en) Speaker

Legal Events

Date Code Title Description
PE Patent expired