The talkies (1930)

Record Details:

Title:
The talkies
Date:
1930
Publisher:
London: Crosby Lockwood and Son
Volume:
The talkies
Leaf #:
00084
Language:
English
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
March 28, 2024
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52 THETALKIES There is a very great deal to be said for the variable area method of recording ; to begin with, there are no delicate graduations of exposure which have to be, as we shall see later, treated with such elaborate care; the record is mainly either black or white. In practice it is claimed that it is possible to handle faithfully a far greater range of modulations than with the other method. In addition to this there is not much risk of underexposing or over-exposing the film as with the variable density record, because the light is always of the same strength, a point which is of the utmost assistance to the laboratory people who have to develop and print the film. So much for the actual photography of the sound and the two most important ways of doing it. Now for the reproduction of the recorded sound and the means which are employed to turn the message of the tiny streaks on the film into enough sound to fill a theatre holding two or three thousand people. We have read about the selenium cell used by Bell and those who followed him, and we know that Lauste used selenium and that Whitson found that it had certain drawbacks. Although selenium has been tried again recently its chief fault is that it fails to reproduce evenly