FR736635A - Improvements in sound recording and reproduction processes - Google Patents

Improvements in sound recording and reproduction processes

Info

Publication number
FR736635A
FR736635A FR736635DA FR736635A FR 736635 A FR736635 A FR 736635A FR 736635D A FR736635D A FR 736635DA FR 736635 A FR736635 A FR 736635A
Authority
FR
France
Prior art keywords
sound recording
reproduction processes
reproduction
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
Ferrucco Ferrucci
Gino Murgi
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 FR736635A publication Critical patent/FR736635A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
FR736635D 1931-05-04 1932-05-04 Improvements in sound recording and reproduction processes Expired FR736635A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT736635X 1931-05-04

Publications (1)

Publication Number Publication Date
FR736635A true FR736635A (en) 1932-11-25

Family

ID=11315354

Family Applications (1)

Application Number Title Priority Date Filing Date
FR736635D Expired FR736635A (en) 1931-05-04 1932-05-04 Improvements in sound recording and reproduction processes

Country Status (1)

Country Link
FR (1) FR736635A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755392C (en) * 1937-04-30 1954-02-15 Klangfilm G M B H Frequency film for checking the gap in sound film devices while the film is running

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE755392C (en) * 1937-04-30 1954-02-15 Klangfilm G M B H Frequency film for checking the gap in sound film devices while the film is running

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