FR2492E - Microphone pour forts courants - Google Patents

Microphone pour forts courants

Info

Publication number
FR2492E
FR2492E FR2492A FR2492DA FR2492E FR 2492 E FR2492 E FR 2492E FR 2492 A FR2492 A FR 2492A FR 2492D A FR2492D A FR 2492DA FR 2492 E FR2492 E FR 2492E
Authority
FR
France
Prior art keywords
microphone
strong currents
currents
strong
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.)
Expired
Application number
FR2492A
Other languages
English (en)
Inventor
Raoul Gaillard
Eugene Ducretet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Publication date
Application granted granted Critical
Publication of FR2492E publication Critical patent/FR2492E/fr
Expired 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)
FR2492A Microphone pour forts courants Expired FR2492E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE143599T

Publications (1)

Publication Number Publication Date
FR2492E true FR2492E (fr) 1904-04-27

Family

ID=5669775

Family Applications (2)

Application Number Title Priority Date Filing Date
FR2492A Expired FR2492E (fr) Microphone pour forts courants
FR317785A Expired FR317785A (fr) 1902-01-15 Un microphone pour forts courants

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR317785A Expired FR317785A (fr) 1902-01-15 Un microphone pour forts courants

Country Status (2)

Country Link
DE (1) DE143599C (fr)
FR (2) FR317785A (fr)

Also Published As

Publication number Publication date
FR317785A (fr) 1902-09-27
DE143599C (fr)

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