FR597037A - Improvements to electrical sound conversion devices - Google Patents

Improvements to electrical sound conversion devices

Info

Publication number
FR597037A
FR597037A FR597037DA FR597037A FR 597037 A FR597037 A FR 597037A FR 597037D A FR597037D A FR 597037DA FR 597037 A FR597037 A FR 597037A
Authority
FR
France
Prior art keywords
conversion devices
sound conversion
electrical sound
electrical
devices
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
Charles Wallace Peterson
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 FR597037A publication Critical patent/FR597037A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
FR597037D 1925-04-03 1925-04-04 Improvements to electrical sound conversion devices Expired FR597037A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB894925A GB254033A (en) 1925-04-03 1925-04-03 Improvements in electrical sound converting apparatus

Publications (1)

Publication Number Publication Date
FR597037A true FR597037A (en) 1925-11-06

Family

ID=9862431

Family Applications (1)

Application Number Title Priority Date Filing Date
FR597037D Expired FR597037A (en) 1925-04-03 1925-04-04 Improvements to electrical sound conversion devices

Country Status (2)

Country Link
FR (1) FR597037A (en)
GB (1) GB254033A (en)

Also Published As

Publication number Publication date
GB254033A (en) 1926-07-01

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