FR328039A - New microphone - Google Patents

New microphone

Info

Publication number
FR328039A
FR328039A FR328039DA FR328039A FR 328039 A FR328039 A FR 328039A FR 328039D A FR328039D A FR 328039DA FR 328039 A FR328039 A FR 328039A
Authority
FR
France
Prior art keywords
new microphone
microphone
new
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
Lallie Norbert-Charles-Marie-Felix
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.)
LALLIE NORBERT CHARLES MARIE F
Original Assignee
LALLIE NORBERT CHARLES MARIE F
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 LALLIE NORBERT CHARLES MARIE F filed Critical LALLIE NORBERT CHARLES MARIE F
Application granted granted Critical
Publication of FR328039A publication Critical patent/FR328039A/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)
FR328039D 1902-07-29 1902-07-29 New microphone Expired FR328039A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR328039T 1902-07-29

Publications (1)

Publication Number Publication Date
FR328039A true FR328039A (en) 1903-10-21

Family

ID=1377979

Family Applications (1)

Application Number Title Priority Date Filing Date
FR328039D Expired FR328039A (en) 1902-07-29 1902-07-29 New microphone

Country Status (1)

Country Link
FR (1) FR328039A (en)

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