FR823530A - Oscillation recording device - Google Patents

Oscillation recording device

Info

Publication number
FR823530A
FR823530A FR823530DA FR823530A FR 823530 A FR823530 A FR 823530A FR 823530D A FR823530D A FR 823530DA FR 823530 A FR823530 A FR 823530A
Authority
FR
France
Prior art keywords
recording device
oscillation
oscillation recording
recording
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Application granted granted Critical
Publication of FR823530A publication Critical patent/FR823530A/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
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Seasonings (AREA)
FR823530D 1936-06-25 1937-06-24 Oscillation recording device Expired FR823530A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE495124X 1936-06-25

Publications (1)

Publication Number Publication Date
FR823530A true FR823530A (en) 1938-01-21

Family

ID=6544836

Family Applications (1)

Application Number Title Priority Date Filing Date
FR823530D Expired FR823530A (en) 1936-06-25 1937-06-24 Oscillation recording device

Country Status (2)

Country Link
FR (1) FR823530A (en)
GB (2) GB495124A (en)

Also Published As

Publication number Publication date
GB496928A (en) 1938-12-08
GB495124A (en) 1938-11-08

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