FR858640A - Improvements to recording heads for sound recording and reproducing devices - Google Patents

Improvements to recording heads for sound recording and reproducing devices

Info

Publication number
FR858640A
FR858640A FR858640DA FR858640A FR 858640 A FR858640 A FR 858640A FR 858640D A FR858640D A FR 858640DA FR 858640 A FR858640 A FR 858640A
Authority
FR
France
Prior art keywords
recording
reproducing devices
sound
heads
recording heads
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.)
FILM RECORDING CORP
Original Assignee
FILM RECORDING CORP
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 FILM RECORDING CORP filed Critical FILM RECORDING CORP
Application granted granted Critical
Publication of FR858640A publication Critical patent/FR858640A/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
    • H04R11/08—Gramophone pick-ups using a stylus; Recorders using a stylus

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR858640D 1939-08-03 1939-08-03 Improvements to recording heads for sound recording and reproducing devices Expired FR858640A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR858640T 1939-08-03

Publications (1)

Publication Number Publication Date
FR858640A true FR858640A (en) 1940-11-29

Family

ID=9330024

Family Applications (1)

Application Number Title Priority Date Filing Date
FR858640D Expired FR858640A (en) 1939-08-03 1939-08-03 Improvements to recording heads for sound recording and reproducing devices

Country Status (1)

Country Link
FR (1) FR858640A (en)

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