FR615744A - Box for wireless telephony reception station, forming loudspeaker - Google Patents

Box for wireless telephony reception station, forming loudspeaker

Info

Publication number
FR615744A
FR615744A FR615744DA FR615744A FR 615744 A FR615744 A FR 615744A FR 615744D A FR615744D A FR 615744DA FR 615744 A FR615744 A FR 615744A
Authority
FR
France
Prior art keywords
box
reception station
wireless telephony
forming loudspeaker
telephony reception
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
Marcel Raynal
Maurice Goulot
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 FR615744A publication Critical patent/FR615744A/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 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR615744D 1926-05-07 1926-05-07 Box for wireless telephony reception station, forming loudspeaker Expired FR615744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR615744T 1926-05-07

Publications (1)

Publication Number Publication Date
FR615744A true FR615744A (en) 1927-01-14

Family

ID=8981114

Family Applications (1)

Application Number Title Priority Date Filing Date
FR615744D Expired FR615744A (en) 1926-05-07 1926-05-07 Box for wireless telephony reception station, forming loudspeaker

Country Status (1)

Country Link
FR (1) FR615744A (en)

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