FR921190A - Grouped speaker device - Google Patents

Grouped speaker device

Info

Publication number
FR921190A
FR921190A FR921190DA FR921190A FR 921190 A FR921190 A FR 921190A FR 921190D A FR921190D A FR 921190DA FR 921190 A FR921190 A FR 921190A
Authority
FR
France
Prior art keywords
speaker device
grouped
grouped speaker
speaker
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)
Inventor
Jean-Adolphe Dereux
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 filed Critical
Application granted granted Critical
Publication of FR921190A publication Critical patent/FR921190A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR921190D 1945-11-06 1945-11-06 Grouped speaker device Expired FR921190A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR921190T 1945-11-06

Publications (1)

Publication Number Publication Date
FR921190A true FR921190A (en) 1947-04-29

Family

ID=9434239

Family Applications (1)

Application Number Title Priority Date Filing Date
FR921190D Expired FR921190A (en) 1945-11-06 1945-11-06 Grouped speaker device

Country Status (1)

Country Link
FR (1) FR921190A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003919A1 (en) * 1987-10-26 1989-05-05 Naeslund Jan A device for a meeting-hall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989003919A1 (en) * 1987-10-26 1989-05-05 Naeslund Jan A device for a meeting-hall

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