The talkies (1930)

Page scan 00077 from The talkies

Record Details:

Title:
The talkies
Date:
1930
Publisher:
London: Crosby Lockwood and Son
Volume:
The talkies
Leaf #:
00077
Language:
English
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
August 29, 2024
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THE TALKIES 45 point, or thin slot of light, on to the photographic film. i. Any variation of the Intensity of the light will be faithfully recorded on the passing film in streaks of varying "greyness." 2. Any movement of the ray of light, which can be caused to wobble either by a mirror or some other electrical means, will be shown as a zigzag area of clear film and densely exposed black film. The first of these methods is called the "Variable Density" method, and the second the "Variable Area" method. Lauste, you will remember, mentioned both these ideas. We read in his patent specification : We record them [the sound waves] photographically in varying degrees as area . . . intensity, and corresponding effects of light and shade. The photographs show both these methods "on separate parts or in separate positions of . . . the same transparent medium" — so here was the idea of the combined picture and sound-record written down in black and white twenty-three years ago ! We shall see later that the idea of having the sound-record on the same film as the picture