FR1502710A - Sound system - Google Patents

Sound system

Info

Publication number
FR1502710A
FR1502710A FR69547A FR69547A FR1502710A FR 1502710 A FR1502710 A FR 1502710A FR 69547 A FR69547 A FR 69547A FR 69547 A FR69547 A FR 69547A FR 1502710 A FR1502710 A FR 1502710A
Authority
FR
France
Prior art keywords
sound system
sound
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
FR69547A
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.)
INTERNAT Co FOR RESAERCH
Original Assignee
INTERNAT Co FOR RESAERCH
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 INTERNAT Co FOR RESAERCH filed Critical INTERNAT Co FOR RESAERCH
Application granted granted Critical
Publication of FR1502710A publication Critical patent/FR1502710A/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
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers
FR69547A 1965-07-16 1966-07-15 Sound system Expired FR1502710A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE15527 1965-07-16

Publications (1)

Publication Number Publication Date
FR1502710A true FR1502710A (en) 1967-11-24

Family

ID=3839875

Family Applications (1)

Application Number Title Priority Date Filing Date
FR69547A Expired FR1502710A (en) 1965-07-16 1966-07-15 Sound system

Country Status (2)

Country Link
BE (1) BE667029A (en)
FR (1) FR1502710A (en)

Also Published As

Publication number Publication date
BE667029A (en) 1965-11-16

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