FR810045A - Improvements in sound recording processes and devices - Google Patents

Improvements in sound recording processes and devices

Info

Publication number
FR810045A
FR810045A FR810045DA FR810045A FR 810045 A FR810045 A FR 810045A FR 810045D A FR810045D A FR 810045DA FR 810045 A FR810045 A FR 810045A
Authority
FR
France
Prior art keywords
devices
sound recording
recording processes
processes
sound
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
Henry Joseph Round
Frank Percival Swann
Frank Arthur Round
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 FR810045A publication Critical patent/FR810045A/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
FR810045D 1935-07-19 1936-07-18 Improvements in sound recording processes and devices Expired FR810045A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB810045X 1935-07-19

Publications (1)

Publication Number Publication Date
FR810045A true FR810045A (en) 1937-03-13

Family

ID=10518857

Family Applications (1)

Application Number Title Priority Date Filing Date
FR810045D Expired FR810045A (en) 1935-07-19 1936-07-18 Improvements in sound recording processes and devices

Country Status (1)

Country Link
FR (1) FR810045A (en)

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