FR421093A - Appareil transformateur de la voix - Google Patents

Appareil transformateur de la voix

Info

Publication number
FR421093A
FR421093A FR421093DA FR421093A FR 421093 A FR421093 A FR 421093A FR 421093D A FR421093D A FR 421093DA FR 421093 A FR421093 A FR 421093A
Authority
FR
France
Prior art keywords
transformer device
voice transformer
voice
transformer
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
Raymond-Charles-Marie Bonneau Du Martray
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.)
RAYMOND CHARLES MARIE BONNEAU
Original Assignee
RAYMOND CHARLES MARIE BONNEAU
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 RAYMOND CHARLES MARIE BONNEAU filed Critical RAYMOND CHARLES MARIE BONNEAU
Application granted granted Critical
Publication of FR421093A publication Critical patent/FR421093A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR421093D 1910-10-04 1910-10-04 Appareil transformateur de la voix Expired FR421093A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR421093T 1910-10-04

Publications (1)

Publication Number Publication Date
FR421093A true FR421093A (fr) 1911-02-14

Family

ID=1464172

Family Applications (1)

Application Number Title Priority Date Filing Date
FR421093D Expired FR421093A (fr) 1910-10-04 1910-10-04 Appareil transformateur de la voix

Country Status (1)

Country Link
FR (1) FR421093A (fr)

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