CH558121A - DYNAMIC SMALL SPEAKER FOR VOICE TRANSMISSION. - Google Patents

DYNAMIC SMALL SPEAKER FOR VOICE TRANSMISSION.

Info

Publication number
CH558121A
CH558121A CH1055273A CH1055273A CH558121A CH 558121 A CH558121 A CH 558121A CH 1055273 A CH1055273 A CH 1055273A CH 1055273 A CH1055273 A CH 1055273A CH 558121 A CH558121 A CH 558121A
Authority
CH
Switzerland
Prior art keywords
voice transmission
small speaker
dynamic small
dynamic
speaker
Prior art date
Application number
CH1055273A
Other languages
German (de)
Original Assignee
Peiker Heinrich
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 Peiker Heinrich filed Critical Peiker Heinrich
Priority to CH1055273A priority Critical patent/CH558121A/en
Priority to DE19742411497 priority patent/DE2411497C3/en
Priority to GB3045774A priority patent/GB1465094A/en
Priority to FR7425190A priority patent/FR2238308B1/fr
Publication of CH558121A publication Critical patent/CH558121A/en

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
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/10—Telephone receivers
    • 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 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers
CH1055273A 1973-07-19 1973-07-19 DYNAMIC SMALL SPEAKER FOR VOICE TRANSMISSION. CH558121A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CH1055273A CH558121A (en) 1973-07-19 1973-07-19 DYNAMIC SMALL SPEAKER FOR VOICE TRANSMISSION.
DE19742411497 DE2411497C3 (en) 1973-07-19 1974-03-11 Dynamic small speaker for voice transmission
GB3045774A GB1465094A (en) 1973-07-19 1974-07-09 Dynamic loudspeaker for speech transmission
FR7425190A FR2238308B1 (en) 1973-07-19 1974-07-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1055273A CH558121A (en) 1973-07-19 1973-07-19 DYNAMIC SMALL SPEAKER FOR VOICE TRANSMISSION.

Publications (1)

Publication Number Publication Date
CH558121A true CH558121A (en) 1975-01-15

Family

ID=4364418

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1055273A CH558121A (en) 1973-07-19 1973-07-19 DYNAMIC SMALL SPEAKER FOR VOICE TRANSMISSION.

Country Status (3)

Country Link
CH (1) CH558121A (en)
FR (1) FR2238308B1 (en)
GB (1) GB1465094A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572614A1 (en) * 1984-10-31 1986-05-02 Sony Corp ELECTROACOUSTIC EARPHONE
EP0232096A2 (en) * 1986-01-23 1987-08-12 Siemens Plessey Electronic Systems Limited Acoustic transducers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2572614A1 (en) * 1984-10-31 1986-05-02 Sony Corp ELECTROACOUSTIC EARPHONE
EP0232096A2 (en) * 1986-01-23 1987-08-12 Siemens Plessey Electronic Systems Limited Acoustic transducers
EP0232096A3 (en) * 1986-01-23 1988-10-05 Plessey Overseas Limited Acoustic transducers

Also Published As

Publication number Publication date
FR2238308B1 (en) 1982-10-08
DE2411497A1 (en) 1975-02-06
FR2238308A1 (en) 1975-02-14
GB1465094A (en) 1977-02-23
DE2411497B2 (en) 1976-04-08

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Legal Events

Date Code Title Description
PL Patent ceased