FR1025779A - Transformateur électroacoustique - Google Patents

Transformateur électroacoustique

Info

Publication number
FR1025779A
FR1025779A FR1025779DA FR1025779A FR 1025779 A FR1025779 A FR 1025779A FR 1025779D A FR1025779D A FR 1025779DA FR 1025779 A FR1025779 A FR 1025779A
Authority
FR
France
Prior art keywords
electroacoustic transformer
electroacoustic
transformer
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
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.)
Autophon AG
Original Assignee
Autophon 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 Autophon AG filed Critical Autophon AG
Application granted granted Critical
Publication of FR1025779A publication Critical patent/FR1025779A/fr
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
    • 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 
FR1025779D 1949-10-17 1950-10-10 Transformateur électroacoustique Expired FR1025779A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1025779X 1949-10-17

Publications (1)

Publication Number Publication Date
FR1025779A true FR1025779A (fr) 1953-04-20

Family

ID=4553370

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1025779D Expired FR1025779A (fr) 1949-10-17 1950-10-10 Transformateur électroacoustique

Country Status (1)

Country Link
FR (1) FR1025779A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454912A (en) * 1967-04-28 1969-07-08 Roanwell Corp Transducer drive rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3454912A (en) * 1967-04-28 1969-07-08 Roanwell Corp Transducer drive rod

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