FR493253A - Precision microphone device for variable intensities - Google Patents

Precision microphone device for variable intensities

Info

Publication number
FR493253A
FR493253A FR493253DA FR493253A FR 493253 A FR493253 A FR 493253A FR 493253D A FR493253D A FR 493253DA FR 493253 A FR493253 A FR 493253A
Authority
FR
France
Prior art keywords
microphone device
variable intensities
precision microphone
precision
intensities
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
Other languages
French (fr)
Inventor
Rene Darmezin Du Rousset
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.)
RENE DARMEZIN DU ROUSSET
Original Assignee
RENE DARMEZIN DU ROUSSET
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.)
Filing date
Publication date
Application filed by RENE DARMEZIN DU ROUSSET filed Critical RENE DARMEZIN DU ROUSSET
Application granted granted Critical
Publication of FR493253A publication Critical patent/FR493253A/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
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR493253D 1916-01-17 1916-01-17 Precision microphone device for variable intensities Expired FR493253A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR493253T 1916-01-17

Publications (1)

Publication Number Publication Date
FR493253A true FR493253A (en) 1919-08-05

Family

ID=1529019

Family Applications (1)

Application Number Title Priority Date Filing Date
FR493253D Expired FR493253A (en) 1916-01-17 1916-01-17 Precision microphone device for variable intensities

Country Status (1)

Country Link
FR (1) FR493253A (en)

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