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FR832394A - Improvements in sound recording and reproduction - Google Patents

Improvements in sound recording and reproduction

Info

Publication number
FR832394A
FR832394A FR832394DA FR832394A FR 832394 A FR832394 A FR 832394A FR 832394D A FR832394D A FR 832394DA FR 832394 A FR832394 A FR 832394A
Authority
FR
France
Prior art keywords
reproduction
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)
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR832394A publication Critical patent/FR832394A/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
FR832394D 1937-02-27 1938-01-22 Improvements in sound recording and reproduction Expired FR832394A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US832394XA 1937-02-27 1937-02-27

Publications (1)

Publication Number Publication Date
FR832394A true FR832394A (en) 1938-09-26

Family

ID=22177074

Family Applications (1)

Application Number Title Priority Date Filing Date
FR832394D Expired FR832394A (en) 1937-02-27 1938-01-22 Improvements in sound recording and reproduction

Country Status (1)

Country Link
FR (1) FR832394A (en)

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