The talkies (1930)

Page scan 000207 from The talkies

Record Details:

Title:
The talkies
Date:
1930
Publisher:
London: Crosby Lockwood and Son
Volume:
The talkies
Leaf #:
000207
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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THETALKIES 135 one side, if he wants the stage for other work. The moving-coil type can, however, be installed round the edge of the screen and remain in position out of the way, whether in use or not. When film recording is done on Western Electric apparatus, the variable density method is used; doubtless this Company consider that this method is the best. That view is, however, not held by the Radio Corporation of America, who not only use coil-driven loudspeakers, but maintain that the variable area method of recording, which they employ exclusively, is capable of a greater range of sound reproduction than the variable density method. There is, moreover, the undoubted advantage that this form of film record is far simpler to handle from the point of view of printing and development. The difficulty that the variable density film, with its delicate graduations, requires a different contrast treatment to the picture portion, does not arise when variable area records are made; because the sound-record is, as we have seen, either dead black or practically clear celluloid. The projectors of the Radio Corporation of America are also capable of handling disc records, a device being provided for maintaining a constant speed in the projectors. This consists of a revolving