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FR1391125A - PA method and device - Google Patents

PA method and device

Info

Publication number
FR1391125A
FR1391125A FR961291A FR961291A FR1391125A FR 1391125 A FR1391125 A FR 1391125A FR 961291 A FR961291 A FR 961291A FR 961291 A FR961291 A FR 961291A FR 1391125 A FR1391125 A FR 1391125A
Authority
FR
France
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
FR961291A
Other languages
French (fr)
Inventor
Joseph Henri Leon
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
Priority to FR961291A priority Critical patent/FR1391125A/en
Application granted granted Critical
Publication of FR1391125A publication Critical patent/FR1391125A/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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR961291A 1964-01-23 1964-01-23 PA method and device Expired FR1391125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR961291A FR1391125A (en) 1964-01-23 1964-01-23 PA method and device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR961291A FR1391125A (en) 1964-01-23 1964-01-23 PA method and device

Publications (1)

Publication Number Publication Date
FR1391125A true FR1391125A (en) 1965-03-05

Family

ID=8821545

Family Applications (1)

Application Number Title Priority Date Filing Date
FR961291A Expired FR1391125A (en) 1964-01-23 1964-01-23 PA method and device

Country Status (1)

Country Link
FR (1) FR1391125A (en)

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