GB1277912A - Electro-acoustic transducers - Google Patents

Electro-acoustic transducers

Info

Publication number
GB1277912A
GB1277912A GB21953/69A GB2195369A GB1277912A GB 1277912 A GB1277912 A GB 1277912A GB 21953/69 A GB21953/69 A GB 21953/69A GB 2195369 A GB2195369 A GB 2195369A GB 1277912 A GB1277912 A GB 1277912A
Authority
GB
United Kingdom
Prior art keywords
disc
piezo
electric
april
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
GB21953/69A
Other languages
English (en)
Inventor
William Donald Cragg
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.)
STC PLC
Original Assignee
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 PLC filed Critical Standard Telephone and Cables PLC
Priority to GB21953/69A priority Critical patent/GB1277912A/en
Priority to IL34068A priority patent/IL34068A/xx
Priority to DE19702019520 priority patent/DE2019520A1/de
Priority to JP45034316A priority patent/JPS4823005B1/ja
Priority to FR7015631A priority patent/FR2040447B1/fr
Priority to ES379238A priority patent/ES379238A1/es
Publication of GB1277912A publication Critical patent/GB1277912A/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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Piezo-Electric Transducers For Audible Bands (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
GB21953/69A 1969-04-30 1969-04-30 Electro-acoustic transducers Expired GB1277912A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB21953/69A GB1277912A (en) 1969-04-30 1969-04-30 Electro-acoustic transducers
IL34068A IL34068A (en) 1969-04-30 1970-03-12 Piezoelectric transducer
DE19702019520 DE2019520A1 (de) 1969-04-30 1970-04-22 Knochenleitungsmikrofon
JP45034316A JPS4823005B1 (enrdf_load_stackoverflow) 1969-04-30 1970-04-23
FR7015631A FR2040447B1 (enrdf_load_stackoverflow) 1969-04-30 1970-04-29
ES379238A ES379238A1 (es) 1969-04-30 1970-04-30 Microfono o receptor de conduccion osea.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB21953/69A GB1277912A (en) 1969-04-30 1969-04-30 Electro-acoustic transducers

Publications (1)

Publication Number Publication Date
GB1277912A true GB1277912A (en) 1972-06-14

Family

ID=10171533

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21953/69A Expired GB1277912A (en) 1969-04-30 1969-04-30 Electro-acoustic transducers

Country Status (6)

Country Link
JP (1) JPS4823005B1 (enrdf_load_stackoverflow)
DE (1) DE2019520A1 (enrdf_load_stackoverflow)
ES (1) ES379238A1 (enrdf_load_stackoverflow)
FR (1) FR2040447B1 (enrdf_load_stackoverflow)
GB (1) GB1277912A (enrdf_load_stackoverflow)
IL (1) IL34068A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1542499A2 (en) 2003-12-12 2005-06-15 Nec Tokin Corporation Acoustic vibration generating element
WO2017182179A1 (de) * 2016-04-19 2017-10-26 Robert Bosch Gmbh Mikromechanisches bauteil und herstellungsverfahren für ein mikromechanisches bauteil
CN114449417A (zh) * 2020-10-30 2022-05-06 华为技术有限公司 扬声器及电子设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902262A (en) * 1973-12-19 1975-09-02 Burroughs Corp Identification and/or credit card with flush mounted panels
JPS5411605U (enrdf_load_stackoverflow) * 1977-06-27 1979-01-25
EP0500985A1 (en) * 1991-02-27 1992-09-02 Masao Konomi Bone conduction microphone mount

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE452217A (enrdf_load_stackoverflow) *
US2045427A (en) * 1933-05-24 1936-06-23 Sonotone Corp Bone-conduction hearing-aid
US3423543A (en) * 1965-06-24 1969-01-21 Harry W Kompanek Loudspeaker with piezoelectric wafer driving elements

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1542499A2 (en) 2003-12-12 2005-06-15 Nec Tokin Corporation Acoustic vibration generating element
EP1542499A3 (en) * 2003-12-12 2005-06-29 Nec Tokin Corporation Acoustic vibration generating element
CN1627864B (zh) * 2003-12-12 2010-09-01 Nec东金株式会社 声振动发生元件
US8107646B2 (en) 2003-12-12 2012-01-31 Nec Tokin Corporation Acoustic vibration generating element
WO2017182179A1 (de) * 2016-04-19 2017-10-26 Robert Bosch Gmbh Mikromechanisches bauteil und herstellungsverfahren für ein mikromechanisches bauteil
CN114449417A (zh) * 2020-10-30 2022-05-06 华为技术有限公司 扬声器及电子设备
CN114449417B (zh) * 2020-10-30 2022-11-25 华为技术有限公司 扬声器及电子设备

Also Published As

Publication number Publication date
ES379238A1 (es) 1972-09-16
DE2019520A1 (de) 1970-11-12
JPS4823005B1 (enrdf_load_stackoverflow) 1973-07-10
FR2040447A1 (enrdf_load_stackoverflow) 1971-01-22
IL34068A0 (en) 1970-05-21
IL34068A (en) 1973-06-29
FR2040447B1 (enrdf_load_stackoverflow) 1974-05-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee