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BE338918A - - Google Patents

Info

Publication number
BE338918A
BE338918A BE338918DA BE338918A BE 338918 A BE338918 A BE 338918A BE 338918D A BE338918D A BE 338918DA BE 338918 A BE338918 A BE 338918A
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 BE338918A publication Critical patent/BE338918A/xx

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00Details of transducers, loudspeakers or microphones
    • H04R1/20Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34Arrangements 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
    • H04R1/345Arrangements 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)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
BE338918D 1926-02-20 BE338918A (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4945/26A GB274532A (en) 1926-02-20 1926-02-20 Improvements in or relating to acoustic amplifiers and radiators suitable for use with loud speaking telephonic receivers and other sound producing or reproducing apparatus

Publications (1)

Publication Number Publication Date
BE338918A true BE338918A (xx)

Family

ID=9786809

Family Applications (2)

Application Number Title Priority Date Filing Date
BE338918D BE338918A (xx) 1926-02-20
BE333006D BE333006A (xx) 1926-02-20

Family Applications After (1)

Application Number Title Priority Date Filing Date
BE333006D BE333006A (xx) 1926-02-20

Country Status (4)

Country Link
US (1) US1678214A (xx)
BE (2) BE333006A (xx)
FR (2) FR613219A (xx)
GB (2) GB257639A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2816619A (en) * 1951-12-04 1957-12-17 John E Karlson Acoustic transducers

Also Published As

Publication number Publication date
GB274532A (en) 1927-07-20
FR613219A (fr) 1926-11-12
BE333006A (xx)
GB257639A (en) 1926-08-31
US1678214A (en) 1928-07-24
FR626769A (fr) 1927-09-19

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