How to add sound to amateur films (1954)

Page scan 00023 from How to add sound to amateur films

Record Details:

Title:
How to add sound to amateur films
Date:
1954
Publisher:
London : Focal Press
Volume:
How to add sound to amateur films
Leaf #:
00023
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Niles Essanay Silent Film Museum
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
September 05, 2024
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* Amplifier In this mixing circuit, the potentiometers P± and P2 act as separate volume controls for the two gramophone pick-ups. Padding-out resistors, Rp, of about the same resistance as Px and P2, are necessary in this arrangement. I — yvwvw £ Amplifier A single centre-tapped potentiometer Px provides a simple and convenient alternative arrangement. vwwvv p Rs Rs l£ Amplifier With this circuit a single potentiometer, P, serves as both volume control and fade-over for the two pick-ups. Each resistor Rs has about one-tenth the resistance of the potentiometer P. 19