FR681733A - Device for recording and reproducing sound - Google Patents

Device for recording and reproducing sound

Info

Publication number
FR681733A
FR681733A FR681733DA FR681733A FR 681733 A FR681733 A FR 681733A FR 681733D A FR681733D A FR 681733DA FR 681733 A FR681733 A FR 681733A
Authority
FR
France
Prior art keywords
recording
reproducing sound
reproducing
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)
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.)
Parlophone Records Ltd
Original Assignee
Gramophone Co Ltd
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 Gramophone Co Ltd filed Critical Gramophone Co Ltd
Application granted granted Critical
Publication of FR681733A publication Critical patent/FR681733A/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
FR681733D 1928-11-17 1929-09-13 Device for recording and reproducing sound Expired FR681733A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB681733X 1928-11-17

Publications (1)

Publication Number Publication Date
FR681733A true FR681733A (en) 1930-05-19

Family

ID=10492504

Family Applications (1)

Application Number Title Priority Date Filing Date
FR681733D Expired FR681733A (en) 1928-11-17 1929-09-13 Device for recording and reproducing sound

Country Status (1)

Country Link
FR (1) FR681733A (en)

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