FR884610A - Improvements in methods and apparatus for sound recording - Google Patents

Improvements in methods and apparatus for sound recording

Info

Publication number
FR884610A
FR884610A FR884610DA FR884610A FR 884610 A FR884610 A FR 884610A FR 884610D A FR884610D A FR 884610DA FR 884610 A FR884610 A FR 884610A
Authority
FR
France
Prior art keywords
methods
sound recording
sound
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)
Inventor
Michel Picot
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 FR884610A publication Critical patent/FR884610A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
FR884610D 1942-03-23 1942-03-23 Improvements in methods and apparatus for sound recording Expired FR884610A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR884610T 1942-03-23

Publications (1)

Publication Number Publication Date
FR884610A true FR884610A (en) 1943-08-23

Family

ID=9375017

Family Applications (1)

Application Number Title Priority Date Filing Date
FR884610D Expired FR884610A (en) 1942-03-23 1942-03-23 Improvements in methods and apparatus for sound recording

Country Status (1)

Country Link
FR (1) FR884610A (en)

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