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FR388513A - Microphone system - Google Patents

Microphone system

Info

Publication number
FR388513A
FR388513A FR388513DA FR388513A FR 388513 A FR388513 A FR 388513A FR 388513D A FR388513D A FR 388513DA FR 388513 A FR388513 A FR 388513A
Authority
FR
France
Prior art keywords
microphone system
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
Other languages
French (fr)
Inventor
Carl Emil Egner
Johan Gunnar Holmstroem
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
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR388513A publication Critical patent/FR388513A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR388513D 1907-03-27 1908-03-25 Microphone system Expired FR388513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE388513X 1907-03-27

Publications (1)

Publication Number Publication Date
FR388513A true FR388513A (en) 1908-08-14

Family

ID=1434180

Family Applications (1)

Application Number Title Priority Date Filing Date
FR388513D Expired FR388513A (en) 1907-03-27 1908-03-25 Microphone system

Country Status (1)

Country Link
FR (1) FR388513A (en)

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