JPS4840084B1 - - Google Patents

Info

Publication number
JPS4840084B1
JPS4840084B1 JP44092079A JP9207969A JPS4840084B1 JP S4840084 B1 JPS4840084 B1 JP S4840084B1 JP 44092079 A JP44092079 A JP 44092079A JP 9207969 A JP9207969 A JP 9207969A JP S4840084 B1 JPS4840084 B1 JP S4840084B1
Authority
JP
Japan
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.)
Pending
Application number
JP44092079A
Other languages
Japanese (ja)
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 filed Critical
Priority to JP44092079A priority Critical patent/JPS4840084B1/ja
Priority to CA097,918A priority patent/CA949674A/en
Priority to DE19702055683 priority patent/DE2055683B2/de
Priority to ZA707721A priority patent/ZA707721B/xx
Priority to GB5488770A priority patent/GB1302430A/en
Priority to US090771A priority patent/US3894199A/en
Priority to FR7041582A priority patent/FR2067388A1/fr
Publication of JPS4840084B1 publication Critical patent/JPS4840084B1/ja
Pending 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)
JP44092079A 1969-11-19 1969-11-19 Pending JPS4840084B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP44092079A JPS4840084B1 (fr) 1969-11-19 1969-11-19
CA097,918A CA949674A (en) 1969-11-19 1970-11-12 Electrostatic electroacoustic transducer
DE19702055683 DE2055683B2 (de) 1969-11-19 1970-11-12 Elektrostatischer elektroakustischer wandler
ZA707721A ZA707721B (en) 1969-11-19 1970-11-16 An electrostatic electro-acoustic transducer
GB5488770A GB1302430A (fr) 1969-11-19 1970-11-18
US090771A US3894199A (en) 1969-11-19 1970-11-18 Electret electrostatic electroacoustic transducer
FR7041582A FR2067388A1 (fr) 1969-11-19 1970-11-19

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
JPS4840084B1 true JPS4840084B1 (fr) 1973-11-28

Family

ID=14044426

Family Applications (1)

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

Country Status (7)

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

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 (fr) * 1973-07-23 1979-07-13
US4224540A (en) * 1978-08-10 1980-09-23 Shigeo Okubo Displacement current sensor
JPH02149199A (ja) * 1988-11-30 1990-06-07 Matsushita Electric Ind Co Ltd エレクトレットコンデンサマイクロホン
FI20010766A0 (fi) * 2001-04-11 2001-04-11 Panphonics Oy Sähkömekaaninen muunnin ja menetelmä energioiden muuntamiseksi
JP4103875B2 (ja) * 2004-09-16 2008-06-18 セイコーエプソン株式会社 超音波トランスデューサ、超音波スピーカ、音響システム、及び超音波トランスデューサの制御方法
JP4103877B2 (ja) * 2004-09-22 2008-06-18 セイコーエプソン株式会社 静電型超音波トランスデューサ及び超音波スピーカ
FI119794B (fi) * 2005-04-28 2009-03-13 Panphonics Oy Sähköstaattinen muunnin, menetelmä sen liittämiseksi ja valmistusmenetelmä
US8559660B2 (en) * 2007-07-12 2013-10-15 Industrial Technology Research Institute Electrostatic electroacoustic transducers
US8391520B2 (en) * 2008-10-24 2013-03-05 Industrial Technology Research Institute Flat speaker unit and speaker device therewith
TWI330500B (en) * 2007-09-04 2010-09-11 Ind Tech Res Inst Speaker structure
US8625824B2 (en) 2007-09-04 2014-01-07 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
TWI340602B (en) * 2007-09-06 2011-04-11 Ind Tech Res Inst Structure and manufactruign method of a electrostatic loudspeaker
TWI343756B (en) * 2009-08-10 2011-06-11 Ind Tech Res Inst Flat loudspeaker structure
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 (zh) * 2009-02-13 2013-06-21 Ind Tech Res Inst 多面向平面式揚聲器裝置
TW201038086A (en) * 2009-04-09 2010-10-16 Ind Tech Res Inst Electrostatic speaker
TWI419577B (zh) * 2009-12-23 2013-12-11 Ind Tech Res Inst 揚聲器的製造方法與裝置
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 (fr) * 2012-12-20 2014-06-26 The Regents Of The University Of California Haut-parleur en graphène électrostatique
KR20160068059A (ko) * 2014-12-04 2016-06-15 삼성디스플레이 주식회사 다공성 압전 박막을 포함하는 압전 소자

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
GB1093836A (en) * 1964-10-24 1967-12-06 Tesla Np Improvements in and relating to an electret microphone and the method of assembling the same
JPS4815867B1 (fr) * 1969-08-28 1973-05-17

Also Published As

Publication number Publication date
ZA707721B (en) 1971-08-25
DE2055683A1 (de) 1971-06-03
US3894199A (en) 1975-07-08
DE2055683B2 (de) 1972-10-05
GB1302430A (fr) 1973-01-10
CA949674A (en) 1974-06-18
FR2067388A1 (fr) 1971-08-20

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