DE190099C - - Google Patents

Info

Publication number
DE190099C
DE190099C DENDAT190099D DE190099DA DE190099C DE 190099 C DE190099 C DE 190099C DE NDAT190099 D DENDAT190099 D DE NDAT190099D DE 190099D A DE190099D A DE 190099DA DE 190099 C DE190099 C DE 190099C
Authority
DE
Germany
Prior art keywords
electrode
felt ring
microphone
wadding
chamber
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
DENDAT190099D
Other languages
German (de)
English (en)
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 DE190099C publication Critical patent/DE190099C/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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
DENDAT190099D 1906-03-19 Active DE190099C (oth)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT369068X 1906-03-19

Publications (1)

Publication Number Publication Date
DE190099C true DE190099C (oth)

Family

ID=5722044

Family Applications (1)

Application Number Title Priority Date Filing Date
DENDAT190099D Active DE190099C (oth) 1906-03-19

Country Status (2)

Country Link
DE (1) DE190099C (oth)
FR (1) FR369068A (oth)

Also Published As

Publication number Publication date
FR369068A (fr) 1906-12-28

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