FR829445A - Further training provided in the establishment of loudspeakers - Google Patents

Further training provided in the establishment of loudspeakers

Info

Publication number
FR829445A
FR829445A FR829445DA FR829445A FR 829445 A FR829445 A FR 829445A FR 829445D A FR829445D A FR 829445DA FR 829445 A FR829445 A FR 829445A
Authority
FR
France
Prior art keywords
loudspeakers
establishment
further training
training provided
training
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
Maurice Fabricant
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 FR829445A publication Critical patent/FR829445A/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)
FR829445D 1937-11-18 1937-11-18 Further training provided in the establishment of loudspeakers Expired FR829445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR829445T 1937-11-18

Publications (1)

Publication Number Publication Date
FR829445A true FR829445A (en) 1938-06-27

Family

ID=9284268

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829445D Expired FR829445A (en) 1937-11-18 1937-11-18 Further training provided in the establishment of loudspeakers

Country Status (1)

Country Link
FR (1) FR829445A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943413C (en) * 1951-07-29 1956-05-17 Siemens Ag Loudspeaker arrangement, preferably with a funnel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE943413C (en) * 1951-07-29 1956-05-17 Siemens Ag Loudspeaker arrangement, preferably with a funnel

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