AU3470771A - Microphone - Google Patents

Microphone

Info

Publication number
AU3470771A
AU3470771A AU34707/71A AU3470771A AU3470771A AU 3470771 A AU3470771 A AU 3470771A AU 34707/71 A AU34707/71 A AU 34707/71A AU 3470771 A AU3470771 A AU 3470771A AU 3470771 A AU3470771 A AU 3470771A
Authority
AU
Australia
Prior art keywords
microphone
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
AU34707/71A
Inventor
DONALD CRAGG and STUART BRADLEY WILLIAM
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.)
Nokia Services Ltd
Original Assignee
Standard Telephone and Cables Pty Ltd
Standard Telephone and Cables PLC
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 Standard Telephone and Cables Pty Ltd, Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables Pty Ltd
Publication of AU3470771A publication Critical patent/AU3470771A/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
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
AU34707/71A 1970-10-22 1971-10-18 Microphone Expired AU3470771A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB50130/70A GB1278009A (en) 1970-10-22 1970-10-22 Microphone
GBGB50130/70 1970-10-22

Publications (1)

Publication Number Publication Date
AU3470771A true AU3470771A (en) 1973-05-03

Family

ID=10454774

Family Applications (1)

Application Number Title Priority Date Filing Date
AU34707/71A Expired AU3470771A (en) 1970-10-22 1971-10-18 Microphone

Country Status (6)

Country Link
US (1) US3856995A (en)
AU (1) AU3470771A (en)
DE (1) DE2152025A1 (en)
FR (1) FR2111759B1 (en)
GB (1) GB1278009A (en)
IL (1) IL38042A0 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4020448A (en) * 1973-09-17 1977-04-26 James Patrick Corbett Oscillating crystal transducer systems
GB1487847A (en) * 1974-09-25 1977-10-05 Ard Anstalt Microphone units
US4413198A (en) * 1981-12-30 1983-11-01 Motorola, Inc. Piezoelectric transducer apparatus
FR2536622B1 (en) * 1982-11-19 1986-03-07 Thomson Csf SPEED HYDROPHONE
US6272360B1 (en) * 1997-07-03 2001-08-07 Pan Communications, Inc. Remotely installed transmitter and a hands-free two-way voice terminal device using same
US8266451B2 (en) * 2001-08-31 2012-09-11 Gemalto Sa Voice activated smart card
JP2010273408A (en) * 2009-05-19 2010-12-02 Emprie Technology Development LLC Power device, method of generating power, and method of manufacturing the power device

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA748567A (en) * 1966-12-13 D. Ibbotson Thomas Electro-acoustic transducers
US2463762A (en) * 1941-11-14 1949-03-08 Automatic Elect Lab Electroacoustical transducer
US2967957A (en) * 1957-09-17 1961-01-10 Massa Frank Electroacoustic transducer
DE1277347B (en) * 1967-06-05 1968-09-12 Willco Gmbh Microphone for hearing aids

Also Published As

Publication number Publication date
FR2111759B1 (en) 1976-12-03
FR2111759A1 (en) 1972-06-09
IL38042A0 (en) 1972-03-28
DE2152025A1 (en) 1972-04-27
US3856995A (en) 1974-12-24
GB1278009A (en) 1972-06-14

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