DE227745C - - Google Patents

Info

Publication number
DE227745C
DE227745C DENDAT227745D DE227745DA DE227745C DE 227745 C DE227745 C DE 227745C DE NDAT227745 D DENDAT227745 D DE NDAT227745D DE 227745D A DE227745D A DE 227745DA DE 227745 C DE227745 C DE 227745C
Authority
DE
Germany
Prior art keywords
membrane
sound
horn
sound waves
cap
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
DENDAT227745D
Other languages
German (de)
English (en)
Publication of DE227745C publication Critical patent/DE227745C/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)
DENDAT227745D Active DE227745C (https=)

Publications (1)

Publication Number Publication Date
DE227745C true DE227745C (https=)

Family

ID=488181

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT227745D Active DE227745C (https=)

Country Status (1)

Country Link
DE (1) DE227745C (https=)

Similar Documents

Publication Publication Date Title
DE3211072C3 (de) Elektret-Richtmikrofon
DE3511792C2 (https=)
DE2939479C2 (https=)
DE2658644A1 (de) Elektroakustischer wandler mit einer membran
DE1134713B (de) Elektronischer Hoerapparat
DE3719830A1 (de) Im-ohr-hoergeraet
DE2558881C2 (de) Kondensatormikrophon
DE2906497A1 (de) Elektretmikrophon
DE227745C (https=)
DE513878C (de) Hoervorrichtung
EP1762117A1 (de) Kondensatormikrofon
DE19843731A1 (de) Vorrichtung zur Schallwandlung
CH672386A5 (https=)
DE345381C (de) Fernsprecheinrichtung mit im Gehaeuse des Mikrophons vorgesehenem Regulierwiderstand, insbesondere fuer Schwerhoerige
DE140614C (https=)
DE1061825B (de) Kohlegriessmikrophon-Sprechkapsel
DE78804C (de) Mikrophon
DE942517C (de) Kohlemikrofon mit einer festen und einer beweglichen Elektrode mit Nebenelektrode
DE245049C (https=)
DE135731C (https=)
AT98881B (de) Schalldose, bei der Druckluft durch gegeneinander bewegliche Gitter geführt wird.
DE323968C (de) Elektrischer Kontakt
EP0432546A2 (de) Piezoelektrische Wandlerkapsel für Fernsprechgeräte
EP0084362B1 (de) Geräuschkompensiertes Nahbesprechungsmikrophon
DE361276C (de) Kugelmikrophon mit hohem Widerstand fuer Zentralbatteriebetrieb