FR568798A - Means and method of controlling an electric current by sounds - Google Patents

Means and method of controlling an electric current by sounds

Info

Publication number
FR568798A
FR568798A FR568798DA FR568798A FR 568798 A FR568798 A FR 568798A FR 568798D A FR568798D A FR 568798DA FR 568798 A FR568798 A FR 568798A
Authority
FR
France
Prior art keywords
sounds
controlling
electric current
electric
current
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
Lee De Forest
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 FR568798A publication Critical patent/FR568798A/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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/004—Transducers other than those covered by groups H04R9/00 - H04R21/00 using ionised gas

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
FR568798D 1922-10-28 1923-07-16 Means and method of controlling an electric current by sounds Expired FR568798A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US206111XA 1922-10-28 1922-10-28

Publications (1)

Publication Number Publication Date
FR568798A true FR568798A (en) 1924-04-01

Family

ID=21799588

Family Applications (1)

Application Number Title Priority Date Filing Date
FR568798D Expired FR568798A (en) 1922-10-28 1923-07-16 Means and method of controlling an electric current by sounds

Country Status (2)

Country Link
FR (1) FR568798A (en)
GB (1) GB206111A (en)

Also Published As

Publication number Publication date
GB206111A (en) 1924-07-31

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