FR574407A - Improvements to sound transmitters - Google Patents

Improvements to sound transmitters

Info

Publication number
FR574407A
FR574407A FR574407DA FR574407A FR 574407 A FR574407 A FR 574407A FR 574407D A FR574407D A FR 574407DA FR 574407 A FR574407 A FR 574407A
Authority
FR
France
Prior art keywords
sound transmitters
transmitters
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
French (fr)
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR574407A publication Critical patent/FR574407A/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
    • H04R11/00—Transducers of moving-armature or moving-core type
    • H04R11/02—Loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR574407D 1922-12-14 1923-12-13 Improvements to sound transmitters Expired FR574407A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB574407X 1922-12-14

Publications (1)

Publication Number Publication Date
FR574407A true FR574407A (en) 1924-07-11

Family

ID=10479200

Family Applications (1)

Application Number Title Priority Date Filing Date
FR574407D Expired FR574407A (en) 1922-12-14 1923-12-13 Improvements to sound transmitters

Country Status (1)

Country Link
FR (1) FR574407A (en)

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