GB2059715B - Electro acoustic transducers - Google Patents

Electro acoustic transducers

Info

Publication number
GB2059715B
GB2059715B GB7932324A GB7932324A GB2059715B GB 2059715 B GB2059715 B GB 2059715B GB 7932324 A GB7932324 A GB 7932324A GB 7932324 A GB7932324 A GB 7932324A GB 2059715 B GB2059715 B GB 2059715B
Authority
GB
United Kingdom
Prior art keywords
acoustic transducers
electro acoustic
electro
transducers
acoustic
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
GB7932324A
Other versions
GB2059715A (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.)
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 GB7932324A priority Critical patent/GB2059715B/en
Priority to BR8005910A priority patent/BR8005910A/en
Publication of GB2059715A publication Critical patent/GB2059715A/en
Application granted granted Critical
Publication of GB2059715B publication Critical patent/GB2059715B/en
Priority to HK76087A priority patent/HK76087A/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
    • H04R17/005—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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/06—Arranging circuit leads; Relieving strain on circuit leads
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
GB7932324A 1979-09-18 1979-09-18 Electro acoustic transducers Expired GB2059715B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB7932324A GB2059715B (en) 1979-09-18 1979-09-18 Electro acoustic transducers
BR8005910A BR8005910A (en) 1979-09-18 1980-09-16 ELECTRIC ACOUSTIC TRANSDUCERS
HK76087A HK76087A (en) 1979-09-18 1987-10-15 Electro-acoustic transducers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB7932324A GB2059715B (en) 1979-09-18 1979-09-18 Electro acoustic transducers

Publications (2)

Publication Number Publication Date
GB2059715A GB2059715A (en) 1981-04-23
GB2059715B true GB2059715B (en) 1984-02-01

Family

ID=10507909

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7932324A Expired GB2059715B (en) 1979-09-18 1979-09-18 Electro acoustic transducers

Country Status (3)

Country Link
BR (1) BR8005910A (en)
GB (1) GB2059715B (en)
HK (1) HK76087A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2542552B1 (en) * 1983-03-07 1986-04-11 Thomson Csf ELECTROACOUSTIC TRANSDUCER WITH PIEZOELECTRIC DIAPHRAGM
DE19541197A1 (en) * 1995-11-04 1997-05-07 Nokia Deutschland Gmbh Arrangement for the emission of sound waves
DK172871B1 (en) * 1997-08-22 1999-08-23 Danfoss As An ultrasonic transducer
JP4206599B2 (en) * 2000-02-29 2009-01-14 康浩 蜂須賀 Microphone

Also Published As

Publication number Publication date
GB2059715A (en) 1981-04-23
HK76087A (en) 1987-10-23
BR8005910A (en) 1981-03-31

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Legal Events

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