BE382496A - - Google Patents

Info

Publication number
BE382496A
BE382496A BE382496DA BE382496A BE 382496 A BE382496 A BE 382496A BE 382496D A BE382496D A BE 382496DA BE 382496 A BE382496 A BE 382496A
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 BE382496A publication Critical patent/BE382496A/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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
BE382496D 1930-09-06 BE382496A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480174A US1877992A (en) 1930-09-06 1930-09-06 Energy-translating device

Publications (1)

Publication Number Publication Date
BE382496A true BE382496A (enrdf_load_html_response)

Family

ID=23906943

Family Applications (1)

Application Number Title Priority Date Filing Date
BE382496D BE382496A (enrdf_load_html_response) 1930-09-06

Country Status (2)

Country Link
US (1) US1877992A (enrdf_load_html_response)
BE (1) BE382496A (enrdf_load_html_response)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2632055A (en) * 1949-04-18 1953-03-17 John E Parker Loud speaker system

Also Published As

Publication number Publication date
US1877992A (en) 1932-09-20

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