FR843643A - Translators of electrical energy into acoustic energy and related provisions - Google Patents

Translators of electrical energy into acoustic energy and related provisions

Info

Publication number
FR843643A
FR843643A FR843643DA FR843643A FR 843643 A FR843643 A FR 843643A FR 843643D A FR843643D A FR 843643DA FR 843643 A FR843643 A FR 843643A
Authority
FR
France
Prior art keywords
translators
energy
electrical energy
related provisions
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
Other languages
French (fr)
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR843643A publication Critical patent/FR843643A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers
FR843643D 1938-03-12 1938-03-12 Translators of electrical energy into acoustic energy and related provisions Expired FR843643A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR843643T 1938-03-12

Publications (1)

Publication Number Publication Date
FR843643A true FR843643A (en) 1939-07-06

Family

ID=9312011

Family Applications (1)

Application Number Title Priority Date Filing Date
FR843643D Expired FR843643A (en) 1938-03-12 1938-03-12 Translators of electrical energy into acoustic energy and related provisions

Country Status (1)

Country Link
FR (1) FR843643A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169601A (en) * 1963-06-28 1965-02-16 Richard M Smith Acoustical cabinet for loudspeakers
US3203502A (en) * 1964-04-28 1965-08-31 Marjorie M Rife Corner speaker enclosure
EP0008274A1 (en) * 1978-08-16 1980-02-20 Dominique Launay Unidirectional acoustical enclosure

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3169601A (en) * 1963-06-28 1965-02-16 Richard M Smith Acoustical cabinet for loudspeakers
US3203502A (en) * 1964-04-28 1965-08-31 Marjorie M Rife Corner speaker enclosure
EP0008274A1 (en) * 1978-08-16 1980-02-20 Dominique Launay Unidirectional acoustical enclosure

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