FR729961A - Transformer of electrical energy into acoustic energy specially applicable to the reproduction of low frequencies - Google Patents

Transformer of electrical energy into acoustic energy specially applicable to the reproduction of low frequencies

Info

Publication number
FR729961A
FR729961A FR729961DA FR729961A FR 729961 A FR729961 A FR 729961A FR 729961D A FR729961D A FR 729961DA FR 729961 A FR729961 A FR 729961A
Authority
FR
France
Prior art keywords
reproduction
transformer
low frequencies
electrical energy
specially applicable
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
Andre-Marie-Bernard Charlin
Pierre-Marie-Gabriel Toulon
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 FR729961A publication Critical patent/FR729961A/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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR729961D 1931-03-28 1931-03-28 Transformer of electrical energy into acoustic energy specially applicable to the reproduction of low frequencies Expired FR729961A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR729961T 1931-03-28

Publications (1)

Publication Number Publication Date
FR729961A true FR729961A (en) 1932-08-04

Family

ID=9112776

Family Applications (1)

Application Number Title Priority Date Filing Date
FR729961D Expired FR729961A (en) 1931-03-28 1931-03-28 Transformer of electrical energy into acoustic energy specially applicable to the reproduction of low frequencies

Country Status (1)

Country Link
FR (1) FR729961A (en)

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