FR570578A - Further training in telephone headsets - Google Patents

Further training in telephone headsets

Info

Publication number
FR570578A
FR570578A FR570578DA FR570578A FR 570578 A FR570578 A FR 570578A FR 570578D A FR570578D A FR 570578DA FR 570578 A FR570578 A FR 570578A
Authority
FR
France
Prior art keywords
further training
telephone headsets
headsets
telephone
training
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
French (fr)
Inventor
Paul Dauzier
Maximilien Faure
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 FR570578A publication Critical patent/FR570578A/en
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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR570578D 1923-09-06 1923-09-06 Further training in telephone headsets Expired FR570578A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR570578T 1923-09-06

Publications (1)

Publication Number Publication Date
FR570578A true FR570578A (en) 1924-05-03

Family

ID=8949981

Family Applications (1)

Application Number Title Priority Date Filing Date
FR570578D Expired FR570578A (en) 1923-09-06 1923-09-06 Further training in telephone headsets

Country Status (1)

Country Link
FR (1) FR570578A (en)

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