FR338161A - Microphone - Google Patents

Microphone

Info

Publication number
FR338161A
FR338161A FR338161DA FR338161A FR 338161 A FR338161 A FR 338161A FR 338161D A FR338161D A FR 338161DA FR 338161 A FR338161 A FR 338161A
Authority
FR
France
Prior art keywords
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)
Inventor
Richard De Horvath
Julius Benedikt
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.)
RICHARD DE HORVATH
Original Assignee
RICHARD DE HORVATH
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 RICHARD DE HORVATH filed Critical RICHARD DE HORVATH
Application granted granted Critical
Publication of FR338161A publication Critical patent/FR338161A/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)
FR338161D 1903-12-29 1903-12-29 Microphone Expired FR338161A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR338161T 1903-12-29

Publications (1)

Publication Number Publication Date
FR338161A true FR338161A (fr) 1904-05-10

Family

ID=1387461

Family Applications (1)

Application Number Title Priority Date Filing Date
FR338161D Expired FR338161A (fr) 1903-12-29 1903-12-29 Microphone

Country Status (1)

Country Link
FR (1) FR338161A (fr)

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