FR329971A - Système de microphone - Google Patents

Système de microphone

Info

Publication number
FR329971A
FR329971A FR329971A FR329971DA FR329971A FR 329971 A FR329971 A FR 329971A FR 329971 A FR329971 A FR 329971A FR 329971D A FR329971D A FR 329971DA FR 329971 A FR329971 A FR 329971A
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
FR329971A
Other languages
English (en)
Inventor
Joseph-Andre Tonnart
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.)
JOSEPH ANDRE TONNART
Original Assignee
JOSEPH ANDRE TONNART
Filing date
Publication date
Application filed by JOSEPH ANDRE TONNART filed Critical JOSEPH ANDRE TONNART
Application granted granted Critical
Publication of FR329971A publication Critical patent/FR329971A/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
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR329971A 1903-03-05 Système de microphone Expired FR329971A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE148988T

Publications (1)

Publication Number Publication Date
FR329971A true FR329971A (fr) 1903-08-10

Family

ID=5673092

Family Applications (1)

Application Number Title Priority Date Filing Date
FR329971A Expired FR329971A (fr) 1903-03-05 Système de microphone

Country Status (2)

Country Link
DE (1) DE148988C (fr)
FR (1) FR329971A (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814056B2 (ja) * 1980-05-28 1983-03-17 株式会社日本自動車部品総合研究所 車両用消磁装置

Also Published As

Publication number Publication date
DE148988C (fr)

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