AT258372B - Crystal microphone - Google Patents

Crystal microphone

Info

Publication number
AT258372B
AT258372B AT1144865A AT1144865A AT258372B AT 258372 B AT258372 B AT 258372B AT 1144865 A AT1144865 A AT 1144865A AT 1144865 A AT1144865 A AT 1144865A AT 258372 B AT258372 B AT 258372B
Authority
AT
Austria
Prior art keywords
crystal microphone
microphone
crystal
Prior art date
Application number
AT1144865A
Other languages
German (de)
Original Assignee
Siemens 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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of AT258372B publication Critical patent/AT258372B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/006—Transducers other than those covered by groups H04R9/00 - H04R21/00 using solid state devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
AT1144865A 1964-12-21 1965-12-20 Crystal microphone AT258372B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES94734A DE1277346B (en) 1964-12-21 1964-12-21 Crystal microphone

Publications (1)

Publication Number Publication Date
AT258372B true AT258372B (en) 1967-11-27

Family

ID=7518895

Family Applications (1)

Application Number Title Priority Date Filing Date
AT1144865A AT258372B (en) 1964-12-21 1965-12-20 Crystal microphone

Country Status (6)

Country Link
US (1) US3472972A (en)
AT (1) AT258372B (en)
CH (1) CH432594A (en)
DE (1) DE1277346B (en)
FR (1) FR1458899A (en)
NL (1) NL6515063A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3666899A (en) * 1971-01-04 1972-05-30 Rolamite Inc Push button switches with interlocking diaphragm contact
DE3221997A1 (en) * 1982-06-11 1983-12-15 Securiton AG, 3052 Zollikofen, Bern DEVICE FOR MONITORING ARMORED ROOMS, ESPECIALLY SAFE AND CABINETS, AND FOR GENERATING AN ALARM SIGNAL WHEN A BURGLAR ATTEMPT IS TAKEN
SE443483B (en) * 1983-01-14 1986-02-24 Gustav Georg Arne Bolin RECEIVER MAGNETIC FOR SOUND WAVES CONSISTING OF A RESONANCE DISC AND ANTICULAR CAUSED BY THE SOUND MOVES REACTING PIEZOELECTRIC MICROPHONE TYPE MICROPHONE
DE3623587A1 (en) * 1986-07-12 1988-01-21 Gerd Kress Appliance for measuring the operating time of machines
US8003878B2 (en) * 2008-08-05 2011-08-23 Gaynier David A Electroacoustic transducer system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE728240C (en) * 1937-10-23 1942-11-23 Telefunken Gmbh Protection device for electrical pickups
DE936653C (en) * 1951-03-22 1955-12-15 Electroacustic Ges M B H Pickup systems on speaking machines
US3383475A (en) * 1965-09-08 1968-05-14 Euphonics Corp Microphone employing piezoresistive element

Also Published As

Publication number Publication date
DE1277346B (en) 1968-09-12
CH432594A (en) 1967-03-31
US3472972A (en) 1969-10-14
NL6515063A (en) 1966-06-22
FR1458899A (en) 1966-11-10

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