FR425005A - Télémicrophone - Google Patents

Télémicrophone

Info

Publication number
FR425005A
FR425005A FR425005DA FR425005A FR 425005 A FR425005 A FR 425005A FR 425005D A FR425005D A FR 425005DA FR 425005 A FR425005 A FR 425005A
Authority
FR
France
Prior art keywords
telemicrophone
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-Emile Gerard
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.)
JULES-EMILE GERARD
Original Assignee
JULES-EMILE GERARD
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 JULES-EMILE GERARD filed Critical JULES-EMILE GERARD
Application granted granted Critical
Publication of FR425005A publication Critical patent/FR425005A/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
    • H04R21/023—Microphones with more than one granular chamber

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR425005D 1911-01-18 1911-01-18 Télémicrophone Expired FR425005A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR425005T 1911-01-18

Publications (1)

Publication Number Publication Date
FR425005A true FR425005A (fr) 1911-05-31

Family

ID=1467702

Family Applications (1)

Application Number Title Priority Date Filing Date
FR425005D Expired FR425005A (fr) 1911-01-18 1911-01-18 Télémicrophone

Country Status (1)

Country Link
FR (1) FR425005A (fr)

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