IT968373B - Microfono a condensatore e metodo di fabbricazione dello stesso - Google Patents

Microfono a condensatore e metodo di fabbricazione dello stesso

Info

Publication number: IT968373B
Authority: IT; Italy
Prior art keywords: manufacturing; same; condenser microphone; microphone; condenser
Prior art date: 1971-08-31

Application number

IT7228720A

Other languages

English (en)

Original Assignee

Sony Corp

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.)

1971-08-31

Filing date

1972-08-31

Publication date

1974-03-20

1972-08-31 Application filed by Sony Corp filed Critical Sony Corp

1974-03-20 Application granted granted Critical

1974-03-20 Publication of IT968373B publication Critical patent/IT968373B/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)
Details Of Audible-Bandwidth Transducers (AREA)

IT7228720A 1971-08-31 1972-08-31 Microfono a condensatore e metodo di fabbricazione dello stesso IT968373B (it)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP1971078484U JPS5221046Y2 (it)	1971-08-31	1971-08-31

Publications (1)

Publication Number	Publication Date
IT968373B true IT968373B (it)	1974-03-20

Family

ID=13663251

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IT7228720A IT968373B (it)	1971-08-31	1972-08-31	Microfono a condensatore e metodo di fabbricazione dello stesso

Country Status (8)

Country	Link
US (1)	US3775572A (it)
JP (1)	JPS5221046Y2 (it)
CA (1)	CA946508A (it)
DE (1)	DE2242806C2 (it)
FR (1)	FR2151061B1 (it)
GB (1)	GB1384418A (it)
IT (1)	IT968373B (it)
NL (1)	NL177879C (it)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5618080Y2 (it) *	1974-09-14	1981-04-27
JPS5411857Y2 (it) *	1975-11-14	1979-05-26
US4321432A (en) *	1978-12-23	1982-03-23	Tokyo Shibaura Denki Kabushiki Kaisha	Electrostatic microphone
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
DE3415088C1 (de) *	1984-04-21	1985-09-12	Eugen Beyer, Elektrotechnische Fabrik GmbH & Co, 7100 Heilbronn	Kondensatormikrofon
US4767973A (en) *	1987-07-06	1988-08-30	Sarcos Incorporated	Systems and methods for sensing position and movement
US5854846A (en) *	1996-09-06	1998-12-29	Northrop Grumman Corporation	Wafer fabricated electroacoustic transducer
DE19742249C2 (de) *	1997-09-25	1999-08-05	Georg Neumann Gmbh Berlin	Mikrophon
WO2000062580A1 (en) *	1999-04-12	2000-10-19	Knowles Electronics, Llc	Package for micromachined silicon condenser microphone
EP1843626A2 (en) *	2000-04-26	2007-10-10	Hosiden Corporation	Semiconductor electret capacitor microphone
KR100331600B1 (ko) *	2000-05-22	2002-04-06	김낙현	콘덴서 마이크로폰의 제조방법
US7136496B2 (en) *	2001-04-18	2006-11-14	Sonion Nederland B.V.	Electret assembly for a microphone having a backplate with improved charge stability
US6937735B2 (en) *	2001-04-18	2005-08-30	SonionMicrotronic Néderland B.V.	Microphone for a listening device having a reduced humidity coefficient
US7062058B2 (en) *	2001-04-18	2006-06-13	Sonion Nederland B.V.	Cylindrical microphone having an electret assembly in the end cover
US8280082B2 (en) *	2002-10-08	2012-10-02	Sonion Nederland B.V.	Electret assembly for a microphone having a backplate with improved charge stability
KR101276353B1 (ko) *	2011-12-09	2013-06-24	주식회사 비에스이	다기능 마이크로폰 조립체 및 그 제조방법
CN203708424U (zh) *	2013-12-30	2014-07-09	瑞声声学科技(深圳)有限公司	麦克风

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3300585A (en) *	1963-09-04	1967-01-24	Northern Electric Co	Self-polarized electrostatic microphone-semiconductor amplifier combination
DE1252258C2 (de) *	1965-04-13	1974-06-20		Nach dem elektrostatischen prinzip arbeitender elektroakustischer wandler und verfahren zu seiner herstellung
US3436492A (en) *	1966-01-17	1969-04-01	Northern Electric Co	Field effect electroacoustic transducer
JPS5252581Y1 (it) *	1970-10-08	1977-11-30

1971
- 1971-08-31 JP JP1971078484U patent/JPS5221046Y2/ja not_active Expired
1972
- 1972-08-25 CA CA150,181A patent/CA946508A/en not_active Expired
- 1972-08-29 NL NLAANVRAGE7211755,A patent/NL177879C/xx not_active IP Right Cessation
- 1972-08-29 GB GB4005772A patent/GB1384418A/en not_active Expired
- 1972-08-29 US US00284466A patent/US3775572A/en not_active Expired - Lifetime
- 1972-08-31 FR FR7231011A patent/FR2151061B1/fr not_active Expired
- 1972-08-31 IT IT7228720A patent/IT968373B/it active
- 1972-08-31 DE DE2242806A patent/DE2242806C2/de not_active Expired

Also Published As

Publication number	Publication date
JPS4835339U (it)	1973-04-27
US3775572A (en)	1973-11-27
NL7211755A (it)	1973-03-02
NL177879C (nl)	1985-12-02
FR2151061B1 (it)	1977-01-14
DE2242806A1 (de)	1973-03-08
JPS5221046Y2 (it)	1977-05-14
GB1384418A (en)	1975-02-19
DE2242806C2 (de)	1982-07-08
CA946508A (en)	1974-04-30
NL177879B (nl)	1985-07-01
FR2151061A1 (it)	1973-04-13

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