GB1410822A - Electroacoustic arrangements - Google Patents

Electroacoustic arrangements

Info

Publication number
GB1410822A
GB1410822A GB4592172A GB4592172A GB1410822A GB 1410822 A GB1410822 A GB 1410822A GB 4592172 A GB4592172 A GB 4592172A GB 4592172 A GB4592172 A GB 4592172A GB 1410822 A GB1410822 A GB 1410822A
Authority
GB
United Kingdom
Prior art keywords
electrode
sheet
microphone
source
voltage
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
GB4592172A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB4592172A priority Critical patent/GB1410822A/en
Priority to DE19722261600 priority patent/DE2261600A1/de
Priority to NL7313654A priority patent/NL7313654A/xx
Publication of GB1410822A publication Critical patent/GB1410822A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G7/00—Capacitors in which the capacitance is varied by non-mechanical means; Processes of their manufacture
    • H01G7/02—Electrets, i.e. having a permanently-polarised dielectric
    • H01G7/021—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric
    • H01G7/023—Electrets, i.e. having a permanently-polarised dielectric having an organic dielectric of macromolecular compounds
    • 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
    • H04R17/005—Piezoelectric transducers; Electrostrictive transducers using a piezoelectric polymer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/01—Electrostatic transducers characterised by the use of electrets

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Transducers For Ultrasonic Waves (AREA)
GB4592172A 1972-10-05 1972-10-05 Electroacoustic arrangements Expired GB1410822A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4592172A GB1410822A (en) 1972-10-05 1972-10-05 Electroacoustic arrangements
DE19722261600 DE2261600A1 (de) 1972-10-05 1972-12-15 Tonfrequenzdetektor
NL7313654A NL7313654A (https=) 1972-10-05 1973-10-04

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4592172A GB1410822A (en) 1972-10-05 1972-10-05 Electroacoustic arrangements

Publications (1)

Publication Number Publication Date
GB1410822A true GB1410822A (en) 1975-10-22

Family

ID=10439108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4592172A Expired GB1410822A (en) 1972-10-05 1972-10-05 Electroacoustic arrangements

Country Status (3)

Country Link
DE (1) DE2261600A1 (https=)
GB (1) GB1410822A (https=)
NL (1) NL7313654A (https=)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500635A1 (fr) * 1981-02-25 1982-08-27 United Kingdom Government Perfectionnements aux dispositifs acoustiques sous-marins

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5562494A (en) * 1978-11-05 1980-05-10 Ngk Spark Plug Co Pieozoelectric converter for electric string instrument
US4280018A (en) * 1979-05-14 1981-07-21 Strobotronix, Inc. Integrated piezoelectric sound transducer and preamplifier
DE2942641A1 (de) * 1979-10-22 1981-04-30 Deutsche Itt Industries Gmbh, 7800 Freiburg Telefon-sprechkapsel-innenschaltung als kohlemikrophonersatz
GB2176369B (en) * 1985-05-09 1988-10-05 Plessey Co Plc Improvements in and relating to microphones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2500635A1 (fr) * 1981-02-25 1982-08-27 United Kingdom Government Perfectionnements aux dispositifs acoustiques sous-marins

Also Published As

Publication number Publication date
NL7313654A (https=) 1974-04-09
DE2261600A1 (de) 1974-04-25

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee