FR890072A - Microphone - Google Patents

Microphone

Info

Publication number
FR890072A
FR890072A FR890072DA FR890072A FR 890072 A FR890072 A FR 890072A FR 890072D A FR890072D A FR 890072DA FR 890072 A FR890072 A FR 890072A
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)
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.)
P E L Co SA
Original Assignee
P E L Co SA
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 P E L Co SA filed Critical P E L Co SA
Application granted granted Critical
Publication of FR890072A publication Critical patent/FR890072A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR890072D 1942-06-19 1942-06-19 Microphone Expired FR890072A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR890072T 1942-06-19

Publications (1)

Publication Number Publication Date
FR890072A true FR890072A (fr) 1944-01-27

Family

ID=9377943

Family Applications (1)

Application Number Title Priority Date Filing Date
FR890072D Expired FR890072A (fr) 1942-06-19 1942-06-19 Microphone

Country Status (1)

Country Link
FR (1) FR890072A (fr)

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