FR396475A - Microphone perfectionné - Google Patents

Microphone perfectionné

Info

Publication number
FR396475A
FR396475A FR396475DA FR396475A FR 396475 A FR396475 A FR 396475A FR 396475D A FR396475D A FR 396475DA FR 396475 A FR396475 A FR 396475A
Authority
FR
France
Prior art keywords
microphone
advanced
advanced 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
English (en)
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.)
AKUSTIK DEUTSCHE GmbH
Original Assignee
AKUSTIK DEUTSCHE GmbH
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 AKUSTIK DEUTSCHE GmbH filed Critical AKUSTIK DEUTSCHE GmbH
Application granted granted Critical
Publication of FR396475A publication Critical patent/FR396475A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR396475D 1908-11-19 1908-11-19 Microphone perfectionné Expired FR396475A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR396475T 1908-11-19

Publications (1)

Publication Number Publication Date
FR396475A true FR396475A (fr) 1909-04-13

Family

ID=1441604

Family Applications (1)

Application Number Title Priority Date Filing Date
FR396475D Expired FR396475A (fr) 1908-11-19 1908-11-19 Microphone perfectionné

Country Status (1)

Country Link
FR (1) FR396475A (fr)

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