DE89558C - - Google Patents

Info

Publication number
DE89558C
DE89558C DENDAT89558D DE89558DA DE89558C DE 89558 C DE89558 C DE 89558C DE NDAT89558 D DENDAT89558 D DE NDAT89558D DE 89558D A DE89558D A DE 89558DA DE 89558 C DE89558 C DE 89558C
Authority
DE
Germany
Prior art keywords
electrode
record
membrane
packing
section
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
DENDAT89558D
Other languages
German (de)
English (en)
Publication of DE89558C publication Critical patent/DE89558C/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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
DENDAT89558D Active DE89558C (https=)

Publications (1)

Publication Number Publication Date
DE89558C true DE89558C (https=)

Family

ID=361365

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT89558D Active DE89558C (https=)

Country Status (1)

Country Link
DE (1) DE89558C (https=)

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