NL17666C - - Google Patents

Info

Publication number
NL17666C
NL17666C NL17666DA NL17666C NL 17666 C NL17666 C NL 17666C NL 17666D A NL17666D A NL 17666DA NL 17666 C NL17666 C NL 17666C
Authority
NL
Netherlands
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 NL17666C publication Critical patent/NL17666C/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • 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 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Electromagnetism (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
NL17666D 1925-03-25 NL17666C (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB470594X 1925-03-25

Publications (1)

Publication Number Publication Date
NL17666C true NL17666C (enrdf_load_stackoverflow)

Family

ID=10443555

Family Applications (1)

Application Number Title Priority Date Filing Date
NL17666D NL17666C (enrdf_load_stackoverflow) 1925-03-25

Country Status (2)

Country Link
DE (1) DE470594C (enrdf_load_stackoverflow)
NL (1) NL17666C (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
DE470594C (de) 1929-01-22

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