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FR920129A - Appareil phonique piézo-électrique - Google Patents

Appareil phonique piézo-électrique

Info

Publication number
FR920129A
FR920129A FR920129DA FR920129A FR 920129 A FR920129 A FR 920129A FR 920129D A FR920129D A FR 920129DA FR 920129 A FR920129 A FR 920129A
Authority
FR
France
Prior art keywords
sound device
piezoelectric sound
piezoelectric
sound
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
Other languages
English (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.)
Synton AG
Original Assignee
Synton AG
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 Synton AG filed Critical Synton AG
Application granted granted Critical
Publication of FR920129A publication Critical patent/FR920129A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR920129D 1944-07-28 1945-10-16 Appareil phonique piézo-électrique Expired FR920129A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH920129X 1944-07-28

Publications (1)

Publication Number Publication Date
FR920129A true FR920129A (fr) 1947-03-28

Family

ID=4548118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR920129D Expired FR920129A (fr) 1944-07-28 1945-10-16 Appareil phonique piézo-électrique

Country Status (2)

Country Link
CH (1) CH240251A (fr)
FR (1) FR920129A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3202962A (en) * 1959-09-03 1965-08-24 Honeywell Inc Transducer
JPS5333613A (en) * 1976-09-09 1978-03-29 Matsushita Electric Ind Co Ltd Microphone and its manufacture

Also Published As

Publication number Publication date
CH240251A (de) 1945-12-15

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