FR624248A - Microphone amplificateur réglable - Google Patents

Microphone amplificateur réglable

Info

Publication number
FR624248A
FR624248A FR624248DA FR624248A FR 624248 A FR624248 A FR 624248A FR 624248D A FR624248D A FR 624248DA FR 624248 A FR624248 A FR 624248A
Authority
FR
France
Prior art keywords
adjustable amplifier
amplifier microphone
microphone
adjustable
amplifier
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
English (en)
Inventor
Jules-Gerard Fabre De Parrel
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 filed Critical
Application granted granted Critical
Publication of FR624248A publication Critical patent/FR624248A/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; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/023—Microphones with more than one granular chamber

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR624248D 1926-02-27 1926-02-27 Microphone amplificateur réglable Expired FR624248A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR624248T 1926-02-27

Publications (1)

Publication Number Publication Date
FR624248A true FR624248A (fr) 1927-07-11

Family

ID=8986955

Family Applications (1)

Application Number Title Priority Date Filing Date
FR624248D Expired FR624248A (fr) 1926-02-27 1926-02-27 Microphone amplificateur réglable

Country Status (1)

Country Link
FR (1) FR624248A (fr)

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