CA947856A - Electrostatic acoustic transformer - Google Patents

Electrostatic acoustic transformer

Info

Publication number
CA947856A
CA947856A CA136,566A CA136566A CA947856A CA 947856 A CA947856 A CA 947856A CA 136566 A CA136566 A CA 136566A CA 947856 A CA947856 A CA 947856A
Authority
CA
Canada
Prior art keywords
acoustic transformer
electrostatic acoustic
electrostatic
transformer
acoustic
Prior art date
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.)
Expired
Application number
CA136,566A
Other versions
CA136566S (en
Inventor
Nobuhisa Atoji
Takanisa Aoi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of CA947856A publication Critical patent/CA947856A/en
Expired 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)
CA136,566A 1971-03-11 1972-03-08 Electrostatic acoustic transformer Expired CA947856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1382871A JPS5632839B1 (en) 1971-03-11 1971-03-11

Publications (1)

Publication Number Publication Date
CA947856A true CA947856A (en) 1974-05-21

Family

ID=11844119

Family Applications (1)

Application Number Title Priority Date Filing Date
CA136,566A Expired CA947856A (en) 1971-03-11 1972-03-08 Electrostatic acoustic transformer

Country Status (6)

Country Link
US (1) US3833770A (en)
JP (1) JPS5632839B1 (en)
CA (1) CA947856A (en)
DE (1) DE2211729A1 (en)
FR (1) FR2186799B1 (en)
GB (1) GB1387453A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7313455A (en) * 1973-10-01 1975-04-03 Philips Nv MICROPHONE WITH ELECTROSTATIC CAPSULE.
US3921167A (en) * 1974-06-14 1975-11-18 Ibm Capacitive circuitboard
US4331840A (en) * 1980-02-22 1982-05-25 Lectret S.A. Electret transducer with tapered acoustic chamber
NL8004351A (en) * 1980-07-30 1982-03-01 Philips Nv ELECTRIC CONVERTER.
JPH02149199A (en) * 1988-11-30 1990-06-07 Matsushita Electric Ind Co Ltd Electlet condenser microphone
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
US8184833B2 (en) * 2007-12-14 2012-05-22 Sony Ericsson Mobile Communications Ab Electrostatic speaker arrangement for a mobile device
US20100079379A1 (en) * 2008-09-26 2010-04-01 Sony Ericsson Mobile Communications Ab Portable communication device having an electroluminescent driven haptic keypad
CN110996237A (en) * 2018-05-14 2020-04-10 董耀斌 Electron generator, net charge generating device and electrostatic loudspeaker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3008013A (en) * 1954-07-20 1961-11-07 Ferranti Ltd Electrostatic loudspeakers
US3160715A (en) * 1960-11-15 1964-12-08 Gussing Nils Torsten Alson Electrostatic loudspeakers
US3118022A (en) * 1961-08-07 1964-01-14 Bell Telephone Labor Inc Electroacoustic transducer
FR1354631A (en) * 1962-05-22 1964-03-06 Western Electric Co Electroacoustic transducer

Also Published As

Publication number Publication date
FR2186799A1 (en) 1974-01-11
FR2186799B1 (en) 1975-03-07
DE2211729A1 (en) 1972-09-28
GB1387453A (en) 1975-03-19
JPS5632839B1 (en) 1981-07-30
US3833770A (en) 1974-09-03

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