IT1122126B - Capsula trasduttrice elettroacustica per apparecchi telefonici - Google Patents

Capsula trasduttrice elettroacustica per apparecchi telefonici

Info

Publication number
IT1122126B
IT1122126B IT24265/79A IT2426579A IT1122126B IT 1122126 B IT1122126 B IT 1122126B IT 24265/79 A IT24265/79 A IT 24265/79A IT 2426579 A IT2426579 A IT 2426579A IT 1122126 B IT1122126 B IT 1122126B
Authority
IT
Italy
Prior art keywords
electroacoustic transducer
telephone devices
transducer cap
cap
telephone
Prior art date
Application number
IT24265/79A
Other languages
English (en)
Other versions
IT7924265A0 (it
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
Publication of IT7924265A0 publication Critical patent/IT7924265A0/it
Application granted granted Critical
Publication of IT1122126B publication Critical patent/IT1122126B/it

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
IT24265/79A 1978-07-17 1979-07-11 Capsula trasduttrice elettroacustica per apparecchi telefonici IT1122126B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2831414A DE2831414C2 (de) 1978-07-17 1978-07-17 Wandlerkapsel für Fernsprechgeräte

Publications (2)

Publication Number Publication Date
IT7924265A0 IT7924265A0 (it) 1979-07-11
IT1122126B true IT1122126B (it) 1986-04-23

Family

ID=6044622

Family Applications (1)

Application Number Title Priority Date Filing Date
IT24265/79A IT1122126B (it) 1978-07-17 1979-07-11 Capsula trasduttrice elettroacustica per apparecchi telefonici

Country Status (4)

Country Link
JP (1) JPS5516596A (it)
BR (1) BR7904523A (it)
DE (1) DE2831414C2 (it)
IT (1) IT1122126B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT229674Y1 (it) * 1993-02-26 1999-01-29 Alcatel Dial Face Spa Capsula piezoceramica per apparecchi telefonici

Also Published As

Publication number Publication date
BR7904523A (pt) 1980-04-08
DE2831414C2 (de) 1980-06-19
DE2831414B1 (de) 1979-10-11
JPS5516596A (en) 1980-02-05
IT7924265A0 (it) 1979-07-11

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