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FR2640456B1 - - Google Patents

Info

Publication number
FR2640456B1
FR2640456B1 FR8816385A FR8816385A FR2640456B1 FR 2640456 B1 FR2640456 B1 FR 2640456B1 FR 8816385 A FR8816385 A FR 8816385A FR 8816385 A FR8816385 A FR 8816385A FR 2640456 B1 FR2640456 B1 FR 2640456B1
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.)
Expired - Fee Related
Application number
FR8816385A
Other languages
French (fr)
Other versions
FR2640456A1 (en
Inventor
Brillet Alain
Joyeux Denis
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.)
SCIENCE TEC
Original Assignee
SCIENCE TEC
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 SCIENCE TEC filed Critical SCIENCE TEC
Priority to FR8816385A priority Critical patent/FR2640456A1/en
Priority to PCT/FR1989/000650 priority patent/WO1990007250A1/en
Publication of FR2640456A1 publication Critical patent/FR2640456A1/en
Application granted granted Critical
Publication of FR2640456B1 publication Critical patent/FR2640456B1/fr
Granted 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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Spectrometry And Color Measurement (AREA)
FR8816385A 1988-12-13 1988-12-13 MICROPHONE WITH INTERFEROMETRIC SOUND PRESSURE DETECTION Granted FR2640456A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR8816385A FR2640456A1 (en) 1988-12-13 1988-12-13 MICROPHONE WITH INTERFEROMETRIC SOUND PRESSURE DETECTION
PCT/FR1989/000650 WO1990007250A1 (en) 1988-12-13 1989-12-13 Microphone with interferometric detection of acoustic pressure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8816385A FR2640456A1 (en) 1988-12-13 1988-12-13 MICROPHONE WITH INTERFEROMETRIC SOUND PRESSURE DETECTION

Publications (2)

Publication Number Publication Date
FR2640456A1 FR2640456A1 (en) 1990-06-15
FR2640456B1 true FR2640456B1 (en) 1994-07-13

Family

ID=9372877

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8816385A Granted FR2640456A1 (en) 1988-12-13 1988-12-13 MICROPHONE WITH INTERFEROMETRIC SOUND PRESSURE DETECTION

Country Status (2)

Country Link
FR (1) FR2640456A1 (en)
WO (1) WO1990007250A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1555697A (en) * 1967-11-10 1969-01-31
US4162397A (en) * 1978-06-28 1979-07-24 The United States Of America As Represented By The Secretary Of The Navy Fiber optic acoustic sensor
US4422167A (en) * 1981-06-25 1983-12-20 The United States Of America As Represented By The Secretary Of The Navy Wide-area acousto-optic hydrophone
JPS6018100A (en) * 1983-07-11 1985-01-30 Yasushi Miki Microphone
JPH0618100A (en) * 1992-07-06 1994-01-25 Matsushita Electric Ind Co Ltd Control method and control device for air conditioner

Also Published As

Publication number Publication date
WO1990007250A1 (en) 1990-06-28
FR2640456A1 (en) 1990-06-15

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Legal Events

Date Code Title Description
ST Notification of lapse