BE333007A - - Google Patents

Info

Publication number
BE333007A
BE333007A BE333007DA BE333007A BE 333007 A BE333007 A BE 333007A BE 333007D A BE333007D A BE 333007DA BE 333007 A BE333007 A BE 333007A
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 BE333007A publication Critical patent/BE333007A/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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)
BE333007D 1925-04-04 BE333007A (ja�@�@)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB613059X 1925-04-04

Publications (1)

Publication Number Publication Date
BE333007A true BE333007A (ja�@�@)

Family

ID=10486848

Family Applications (1)

Application Number Title Priority Date Filing Date
BE333007D BE333007A (ja�@�@) 1925-04-04

Country Status (2)

Country Link
BE (1) BE333007A (ja�@�@)
FR (1) FR613059A (ja�@�@)

Also Published As

Publication number Publication date
FR613059A (fr) 1926-11-08

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