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FR824897A - Rotary sound amplifier-diffuser for devices t. s. f. and all other talking machines - Google Patents

Rotary sound amplifier-diffuser for devices t. s. f. and all other talking machines

Info

Publication number
FR824897A
FR824897A FR824897DA FR824897A FR 824897 A FR824897 A FR 824897A FR 824897D A FR824897D A FR 824897DA FR 824897 A FR824897 A FR 824897A
Authority
FR
France
Prior art keywords
diffuser
devices
sound amplifier
talking machines
rotary 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
Other languages
French (fr)
Inventor
Maroquenne Georges
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 FR824897A publication Critical patent/FR824897A/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
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
FR824897D 1937-07-29 1937-07-29 Rotary sound amplifier-diffuser for devices t. s. f. and all other talking machines Expired FR824897A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR824897T 1937-07-29

Publications (1)

Publication Number Publication Date
FR824897A true FR824897A (en) 1938-02-17

Family

ID=9282041

Family Applications (1)

Application Number Title Priority Date Filing Date
FR824897D Expired FR824897A (en) 1937-07-29 1937-07-29 Rotary sound amplifier-diffuser for devices t. s. f. and all other talking machines

Country Status (1)

Country Link
FR (1) FR824897A (en)

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