GB303143A - Improvements in acoustic films and in their methods of manufacture - Google Patents

Improvements in acoustic films and in their methods of manufacture

Info

Publication number
GB303143A
GB303143A GB28548/28A GB2854828A GB303143A GB 303143 A GB303143 A GB 303143A GB 28548/28 A GB28548/28 A GB 28548/28A GB 2854828 A GB2854828 A GB 2854828A GB 303143 A GB303143 A GB 303143A
Authority
GB
United Kingdom
Prior art keywords
records
sound
picture
record
acoustic
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
GB28548/28A
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.)
Societe des Etablissements Gaumont
Original Assignee
Societe des Etablissements Gaumont
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 Societe des Etablissements Gaumont filed Critical Societe des Etablissements Gaumont
Publication of GB303143A publication Critical patent/GB303143A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means

Abstract

303,143. Soc. des Etablissements Gaumont. Dec. 29, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Sound recording and reproducing apparatus associated with kinematographs; record, combined phonograph and kinematograph. -- A plurality of acoustic records are made side by side on the combined picture and sound record described in the parent Specification and in Specification 300,235, and these serve to reproduce simultaneously different ranges of sound in various reproducers specially adapted to the particular range and suitably positioned in relation to the apparent source of the sound on the screen. Alternatively, some of the records may control relays for producing acoustic or luminous signals in synchronism, with the other sounds and the picture being reproduced. The sounds are recorded and reproduced by rays outside the visible range, and the effect of the various thicknesses of the film after development of the picture may be reduced by applying a thin coating of gelatin over the developed film. The Figure shows three records A, B and C across the width of the record strip, the records A and C controlling the action of the rays on photoelectric cells S, S<1>. Specification 297,733 also is referred to.
GB28548/28A 1927-12-29 1928-10-04 Improvements in acoustic films and in their methods of manufacture Expired GB303143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR303143X 1927-12-29

Publications (1)

Publication Number Publication Date
GB303143A true GB303143A (en) 1929-07-18

Family

ID=8888685

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28548/28A Expired GB303143A (en) 1927-12-29 1928-10-04 Improvements in acoustic films and in their methods of manufacture

Country Status (1)

Country Link
GB (1) GB303143A (en)

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