FR352133A - Electro-hydrodynamic microphone - Google Patents

Electro-hydrodynamic microphone

Info

Publication number
FR352133A
FR352133A FR352133A FR352133DA FR352133A FR 352133 A FR352133 A FR 352133A FR 352133 A FR352133 A FR 352133A FR 352133D A FR352133D A FR 352133DA FR 352133 A FR352133 A FR 352133A
Authority
FR
France
Prior art keywords
hydrodynamic
microphone
electro
hydrodynamic microphone
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
FR352133A
Other languages
French (fr)
Inventor
Quirino Majorana
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
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of FR352133A publication Critical patent/FR352133A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/028—Microphones with a fluid as 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)
  • Pipe Accessories (AREA)
FR352133A 1905-03-06 Electro-hydrodynamic microphone Expired FR352133A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE181451T

Publications (1)

Publication Number Publication Date
FR352133A true FR352133A (en) 1905-08-03

Family

ID=5716149

Family Applications (1)

Application Number Title Priority Date Filing Date
FR352133A Expired FR352133A (en) 1905-03-06 Electro-hydrodynamic microphone

Country Status (2)

Country Link
DE (2) DE181520C (en)
FR (1) FR352133A (en)

Also Published As

Publication number Publication date
DE181451C (en)
DE181520C (en)

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