BE381511A - - Google Patents

Info

Publication number
BE381511A
BE381511A BE381511DA BE381511A BE 381511 A BE381511 A BE 381511A BE 381511D A BE381511D A BE 381511DA BE 381511 A BE381511 A BE 381511A
Authority
BE
Belgium
Application number
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.)
Publication of BE381511A publication Critical patent/BE381511A/xx

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 
    • H04R1/24—Structural combinations of separate transducers or of two parts of the same transducer and responsive respectively to two or more frequency ranges

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
BE381511D 1930-08-14 BE381511A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR715389T 1930-08-14

Publications (1)

Publication Number Publication Date
BE381511A true BE381511A (fr)

Family

ID=9088909

Family Applications (1)

Application Number Title Priority Date Filing Date
BE381511D BE381511A (fr) 1930-08-14

Country Status (2)

Country Link
BE (1) BE381511A (fr)
FR (1) FR715389A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897291A (en) * 1955-12-12 1959-07-28 Burke Ambrose Sound reproducer
DE3002843A1 (de) * 1980-01-26 1981-07-30 Magnetfabrik Bonn Gmbh Vorm. Gewerkschaft Windhorst, 5300 Bonn Doppel-ringspalt-magnetsystem fuer dynamische lautsprecher mit unterschiedlichen frequenzbereichen

Also Published As

Publication number Publication date
FR715389A (fr) 1931-12-02

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