ZA707721B - An electrostatic electro-acoustic transducer - Google Patents

An electrostatic electro-acoustic transducer

Info

Publication number
ZA707721B
ZA707721B ZA707721A ZA707721A ZA707721B ZA 707721 B ZA707721 B ZA 707721B ZA 707721 A ZA707721 A ZA 707721A ZA 707721 A ZA707721 A ZA 707721A ZA 707721 B ZA707721 B ZA 707721B
Authority
ZA
South Africa
Prior art keywords
acoustic transducer
electrostatic electro
electro
electrostatic
acoustic
Prior art date
Application number
ZA707721A
Inventor
M Tamura
K Iwama
M Asahina
Original Assignee
Pioneer Electronic 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.)
Filing date
Publication date
Application filed by Pioneer Electronic Corp filed Critical Pioneer Electronic Corp
Publication of ZA707721B publication Critical patent/ZA707721B/en

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
    • H04R19/013—Electrostatic transducers characterised by the use of electrets for loudspeakers
ZA707721A 1969-11-19 1970-11-16 An electrostatic electro-acoustic transducer ZA707721B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44092079A JPS4840084B1 (en) 1969-11-19 1969-11-19

Publications (1)

Publication Number Publication Date
ZA707721B true ZA707721B (en) 1971-08-25

Family

ID=14044426

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA707721A ZA707721B (en) 1969-11-19 1970-11-16 An electrostatic electro-acoustic transducer

Country Status (7)

Country Link
US (1) US3894199A (en)
JP (1) JPS4840084B1 (en)
CA (1) CA949674A (en)
DE (1) DE2055683B2 (en)
FR (1) FR2067388A1 (en)
GB (1) GB1302430A (en)
ZA (1) ZA707721B (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA989514A (en) * 1972-09-08 1976-05-18 Loh-Yi Chang Electromechanical transducer and method of making same
JPS5419172B2 (en) * 1973-07-23 1979-07-13
US4224540A (en) * 1978-08-10 1980-09-23 Shigeo Okubo Displacement current sensor
JPH02149199A (en) * 1988-11-30 1990-06-07 Matsushita Electric Ind Co Ltd Electlet condenser microphone
FI20010766A0 (en) * 2001-04-11 2001-04-11 Panphonics Oy Electromechanical converter and method of energy conversion
JP4103875B2 (en) * 2004-09-16 2008-06-18 セイコーエプソン株式会社 Ultrasonic transducer, ultrasonic speaker, acoustic system, and control method of ultrasonic transducer
JP4103877B2 (en) * 2004-09-22 2008-06-18 セイコーエプソン株式会社 Electrostatic ultrasonic transducer and ultrasonic speaker
FI119794B (en) * 2005-04-28 2009-03-13 Panphonics Oy Electrostatic converter, method of its connection and method of manufacture
US8559660B2 (en) * 2007-07-12 2013-10-15 Industrial Technology Research Institute Electrostatic electroacoustic transducers
TWI330500B (en) * 2007-09-04 2010-09-11 Ind Tech Res Inst Speaker structure
TWI343756B (en) * 2009-08-10 2011-06-11 Ind Tech Res Inst Flat loudspeaker structure
US8391520B2 (en) * 2008-10-24 2013-03-05 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
TWI367034B (en) * 2008-08-01 2012-06-21 Ind Tech Res Inst Structure of a speaker unit
US8625824B2 (en) 2007-09-04 2014-01-07 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
TWI340602B (en) * 2007-09-06 2011-04-11 Ind Tech Res Inst Structure and manufactruign method of a electrostatic loudspeaker
US8184833B2 (en) * 2007-12-14 2012-05-22 Sony Ericsson Mobile Communications Ab Electrostatic speaker arrangement for a mobile device
TWI364995B (en) * 2008-12-18 2012-05-21 Ind Tech Res Inst Assembly structure of planar speaker
TWI399987B (en) * 2009-02-13 2013-06-21 Ind Tech Res Inst Multi-directional flat speaker device
TW201038086A (en) * 2009-04-09 2010-10-16 Ind Tech Res Inst Electrostatic speaker
TWI419577B (en) * 2009-12-23 2013-12-11 Ind Tech Res Inst Method and device of manufacturing speaker
TWM395976U (en) * 2010-06-30 2011-01-01 Tsung-Hung Wu Electret electroacoustic transducer
TW201204062A (en) * 2010-07-15 2012-01-16 Taiwan Electrets Electronics Co Ltd Electrostatic speaker and manufacturing method thereof and conducting plate of the speaker
TW201220862A (en) * 2010-11-03 2012-05-16 Ind Tech Res Inst Driving Interface device adaptive to a flat speaker
WO2014100012A1 (en) * 2012-12-20 2014-06-26 The Regents Of The University Of California Electrostatic graphene speaker
KR20160068059A (en) * 2014-12-04 2016-06-15 삼성디스플레이 주식회사 Piezoelectric element comprising mesoporous piezoelectric thin film

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3118022A (en) * 1961-08-07 1964-01-14 Bell Telephone Labor Inc Electroacoustic transducer
DE1247401B (en) * 1964-10-24 1967-08-17 Tesla Np Electret microphone and its assembly method
JPS4815867B1 (en) * 1969-08-28 1973-05-17

Also Published As

Publication number Publication date
US3894199A (en) 1975-07-08
GB1302430A (en) 1973-01-10
DE2055683A1 (en) 1971-06-03
JPS4840084B1 (en) 1973-11-28
FR2067388A1 (en) 1971-08-20
DE2055683B2 (en) 1972-10-05
CA949674A (en) 1974-06-18

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