DE136242C - - Google Patents

Info

Publication number
DE136242C
DE136242C DENDAT136242D DE136242DA DE136242C DE 136242 C DE136242 C DE 136242C DE NDAT136242 D DENDAT136242 D DE NDAT136242D DE 136242D A DE136242D A DE 136242DA DE 136242 C DE136242 C DE 136242C
Authority
DE
Germany
Prior art keywords
microphone
sound
membrane
felt
separated
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
DENDAT136242D
Other languages
German (de)
English (en)
Publication of DE136242C publication Critical patent/DE136242C/de
Active legal-status Critical Current

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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Building Environments (AREA)
DENDAT136242D Active DE136242C (mber)

Publications (1)

Publication Number Publication Date
DE136242C true DE136242C (mber)

Family

ID=404213

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT136242D Active DE136242C (mber)

Country Status (1)

Country Link
DE (1) DE136242C (mber)

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