BE479727A - - Google Patents

Info

Publication number
BE479727A
BE479727A BE479727DA BE479727A BE 479727 A BE479727 A BE 479727A BE 479727D A BE479727D A BE 479727DA BE 479727 A BE479727 A BE 479727A
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 BE479727A publication Critical patent/BE479727A/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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R27/00—Public address systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
BE479727D 1939-08-09 BE479727A (enrdf_load_html_response)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2298139A GB533360A (en) 1939-08-09 1939-08-09 Improvements in or relating to electric signalling systems

Publications (1)

Publication Number Publication Date
BE479727A true BE479727A (enrdf_load_html_response)

Family

ID=10188166

Family Applications (1)

Application Number Title Priority Date Filing Date
BE479727D BE479727A (enrdf_load_html_response) 1939-08-09

Country Status (2)

Country Link
BE (1) BE479727A (enrdf_load_html_response)
GB (1) GB533360A (enrdf_load_html_response)

Also Published As

Publication number Publication date
GB533360A (en) 1941-02-12

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