Amateur talking pictures and recording (1933)

Page scan 000103 from Amateur talking pictures and recording

Record Details:

Title:
Amateur talking pictures and recording
Date:
1933
Publisher:
London : Sir Isaac Pitman & Sons, Ltd.
Volume:
Amateur talking pictures and recording
Leaf #:
000103
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
May 02, 2024
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TALKING PICTURES 91 not pretend to be even as good as that of the ordinary gramophone record. For many years during the life of the silent cinema it had been common to project pictures at the rate of 16 per second, this being considered sufficient to give true illusion of all types of natural movement. The coming of the soundon-nlru talking picture caused a change, and it was discov Oscillograph Condenser Neiative Film Lamp To Microphone via Amplifier Fig. 46. Variable Width Recording — The Oscillograph ered that to provide adequate reproduction of the high notes a speed of 24 pictures per second was required. In other words, the film speed was increased from 1 ft. to 18 in. of film per second. Clearly, the quality of reproduction reproduced from a sound track is entirely independent of the number of pictures included in the film, and is measured only in the actual length of film passing the exciting lamp beam and the photoelectric cell. Thus when wo turn to the home talking picture we are immediately in trouble. The old silent cinematograph either in 16 mm. or 9-5 mm. film ran at a speed of about 16 pictures per second (14 pictures per second is standard for 9-5 mm. film). We cannot, however, merely increase the number of pictures per second up to 24, add a sound track,