FR2067388A1 - - Google Patents

Info

Publication number
FR2067388A1
FR2067388A1 FR7041582A FR7041582A FR2067388A1 FR 2067388 A1 FR2067388 A1 FR 2067388A1 FR 7041582 A FR7041582 A FR 7041582A FR 7041582 A FR7041582 A FR 7041582A FR 2067388 A1 FR2067388 A1 FR 2067388A1
Authority
FR
France
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
FR7041582A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pioneer Corp
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 FR2067388A1 publication Critical patent/FR2067388A1/fr
Withdrawn legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR7041582A 1969-11-19 1970-11-19 Withdrawn FR2067388A1 (en)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
FR2067388A1 true FR2067388A1 (en) 1971-08-20

Family

ID=14044426

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7041582A Withdrawn FR2067388A1 (en) 1969-11-19 1970-11-19

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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199242A1 (en) * 1972-09-08 1974-04-05 Uniroyal Ltd

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
TWI343756B (en) * 2009-08-10 2011-06-11 Ind Tech Res Inst Flat loudspeaker structure
US8625824B2 (en) 2007-09-04 2014-01-07 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
US8391520B2 (en) * 2008-10-24 2013-03-05 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
TWI330500B (en) * 2007-09-04 2010-09-11 Ind Tech Res Inst Speaker structure
TWI367034B (en) * 2008-08-01 2012-06-21 Ind Tech Res Inst Structure of a speaker unit
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
US3474197A (en) * 1964-10-24 1969-10-21 Tesla Np Electret microphone
JPS4815867B1 (en) * 1969-08-28 1973-05-17

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2199242A1 (en) * 1972-09-08 1974-04-05 Uniroyal Ltd

Also Published As

Publication number Publication date
DE2055683A1 (en) 1971-06-03
US3894199A (en) 1975-07-08
ZA707721B (en) 1971-08-25
DE2055683B2 (en) 1972-10-05
GB1302430A (en) 1973-01-10
JPS4840084B1 (en) 1973-11-28
CA949674A (en) 1974-06-18

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Legal Events

Date Code Title Description
ST Notification of lapse