FR946701A - Dispositif amplificateur sonore auriculaire - Google Patents

Dispositif amplificateur sonore auriculaire

Info

Publication number
FR946701A
FR946701A FR946701DA FR946701A FR 946701 A FR946701 A FR 946701A FR 946701D A FR946701D A FR 946701DA FR 946701 A FR946701 A FR 946701A
Authority
FR
France
Prior art keywords
amplifier device
sound amplifier
ear sound
ear
sound
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
Rene Lajus
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 filed Critical
Application granted granted Critical
Publication of FR946701A publication Critical patent/FR946701A/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
    • H04R13/00—Transducers having an acoustic diaphragm of magnetisable material directly co-acting with electromagnet
    • H04R13/02—Telephone receivers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR946701D 1947-05-08 1947-05-08 Dispositif amplificateur sonore auriculaire Expired FR946701A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR946701T 1947-05-08

Publications (1)

Publication Number Publication Date
FR946701A true FR946701A (fr) 1949-06-13

Family

ID=9473071

Family Applications (1)

Application Number Title Priority Date Filing Date
FR946701D Expired FR946701A (fr) 1947-05-08 1947-05-08 Dispositif amplificateur sonore auriculaire

Country Status (1)

Country Link
FR (1) FR946701A (fr)

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