FR2195144A1 - - Google Patents

Info

Publication number
FR2195144A1
FR2195144A1 FR7328571A FR7328571A FR2195144A1 FR 2195144 A1 FR2195144 A1 FR 2195144A1 FR 7328571 A FR7328571 A FR 7328571A FR 7328571 A FR7328571 A FR 7328571A FR 2195144 A1 FR2195144 A1 FR 2195144A1
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.)
Granted
Application number
FR7328571A
Other languages
French (fr)
Other versions
FR2195144B1 (en
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.)
Sony Corp
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.)
Filing date
Publication date
Application filed by Sony Corp filed Critical Sony Corp
Publication of FR2195144A1 publication Critical patent/FR2195144A1/fr
Application granted granted Critical
Publication of FR2195144B1 publication Critical patent/FR2195144B1/fr
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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Transducers For Ultrasonic Waves (AREA)
FR7328571A 1972-08-04 1973-08-03 Expired FR2195144B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP47078103A JPS5121791B2 (en) 1972-08-04 1972-08-04

Publications (2)

Publication Number Publication Date
FR2195144A1 true FR2195144A1 (en) 1974-03-01
FR2195144B1 FR2195144B1 (en) 1978-08-11

Family

ID=13652531

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7328571A Expired FR2195144B1 (en) 1972-08-04 1973-08-03

Country Status (9)

Country Link
US (1) US3908098A (en)
JP (1) JPS5121791B2 (en)
BR (1) BR7305950D0 (en)
CA (1) CA1008170A (en)
DE (1) DE2339433B2 (en)
FR (1) FR2195144B1 (en)
GB (1) GB1430827A (en)
IT (1) IT992831B (en)
NL (1) NL7310856A (en)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51115933U (en) * 1975-03-17 1976-09-20
US4081626A (en) * 1976-11-12 1978-03-28 Polaroid Corporation Electrostatic transducer having narrowed directional characteristic
JPS53148425A (en) * 1977-05-31 1978-12-25 Kenkichi Tsukamoto Electric sound transducer
JPS5846800A (en) * 1981-09-14 1983-03-18 Matsushita Electric Works Ltd Electrostatic ultrasonic oscillator
US4439642A (en) * 1981-12-28 1984-03-27 Polaroid Corporation High energy ultrasonic transducer
US4495385A (en) * 1982-12-02 1985-01-22 Honeywell Inc. Acoustic microphone
US4891843A (en) * 1983-02-24 1990-01-02 At&T Technologies, Inc. Electret microphone
US4533794A (en) * 1983-05-23 1985-08-06 Beveridge Harold N Electrode for electrostatic transducer
US6044160A (en) * 1998-01-13 2000-03-28 American Technology Corporation Resonant tuned, ultrasonic electrostatic emitter
JP2000050387A (en) * 1998-07-16 2000-02-18 Massachusetts Inst Of Technol <Mit> Parameteric audio system
US6775388B1 (en) 1998-07-16 2004-08-10 Massachusetts Institute Of Technology Ultrasonic transducers
US6850623B1 (en) 1999-10-29 2005-02-01 American Technology Corporation Parametric loudspeaker with improved phase characteristics
US6925187B2 (en) * 2000-03-28 2005-08-02 American Technology Corporation Horn array emitter
US20060233404A1 (en) * 2000-03-28 2006-10-19 American Technology Corporation. Horn array emitter
US6771785B2 (en) 2001-10-09 2004-08-03 Frank Joseph Pompei Ultrasonic transducer for parametric array
US7564981B2 (en) 2003-10-23 2009-07-21 American Technology Corporation Method of adjusting linear parameters of a parametric ultrasonic signal to reduce non-linearities in decoupled audio output waves and system including same
US8275137B1 (en) 2007-03-22 2012-09-25 Parametric Sound Corporation Audio distortion correction for a parametric reproduction system
JP4998299B2 (en) * 2008-02-04 2012-08-15 ヤマハ株式会社 Electrostatic speaker
GB2490931A (en) * 2011-05-19 2012-11-21 Warwick Audio Technologies Ltd Electrostatic acoustic transducer
US9686618B2 (en) 2012-06-12 2017-06-20 Frank Joseph Pompei Ultrasonic transducer
GB2522932A (en) 2014-02-11 2015-08-12 Warwick Audio Technologies Ltd Improved electrostatic transducer
GB2522931A (en) 2014-02-11 2015-08-12 Warwick Audio Technologies Ltd Improved electrostatic transducer
WO2017053716A1 (en) * 2015-09-24 2017-03-30 Frank Joseph Pompei Ultrasonic transducers
GB201906425D0 (en) 2019-05-07 2019-06-19 Warwick Acoustics Ltd Electrostatic transducer and diaphragm

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR634695A (en) * 1926-05-21 1928-02-23 Electrostatic vibratory device
FR1330592A (en) * 1961-08-07 1963-06-21 Western Electric Co Electrostatic transducer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL22541C (en) * 1926-10-20
US1745937A (en) * 1928-03-12 1930-02-04 United Reproducers Patents Cor Acoustic device
US1851240A (en) * 1928-11-02 1932-03-29 United Reproducers Patents Cor Electrostatic sound producer
US2130946A (en) * 1936-12-29 1938-09-20 William A Brune Microphone
US3041418A (en) * 1960-01-14 1962-06-26 Rca Corp Transducers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR634695A (en) * 1926-05-21 1928-02-23 Electrostatic vibratory device
FR1330592A (en) * 1961-08-07 1963-06-21 Western Electric Co Electrostatic transducer

Also Published As

Publication number Publication date
GB1430827A (en) 1976-04-07
JPS4936321A (en) 1974-04-04
DE2339433B2 (en) 1974-12-19
FR2195144B1 (en) 1978-08-11
JPS5121791B2 (en) 1976-07-05
IT992831B (en) 1975-09-30
BR7305950D0 (en) 1974-07-11
CA1008170A (en) 1977-04-05
US3908098A (en) 1975-09-23
NL7310856A (en) 1974-02-06
DE2339433A1 (en) 1974-02-14

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Legal Events

Date Code Title Description
ST Notification of lapse