Third Dimension Movies And E X P A N D E D Screen (1953)

Page scan 000191 from Third Dimension Movies And E X P A N D E D Screen

Record Details:

Title:
Third Dimension Movies And E X P A N D E D Screen
Date:
1953
Publisher:
Cameron Publishing Company
Volume:
Third Dimension Movies And E X P A N D E D Screen
Leaf #:
000191
Language:
English
Collection:
Books
Format:
Books
Contributor:
Universal Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
July 19, 2022
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188 THREE-DIMENSIONAL MOTION PICTURES speaker banks. Each of the three channels includes a variable-gain amplifier, the amplification being con trolled by one of three control frequencies on the special track. The results from this system approach those that can be obtained from the full stereophonic set-up. The con trol frequencies can silence any of the three banks of speakers; hence the sound from the second soundtrack can be made to originate at either side of the proscenium or to swing back and forth across the proscenium open ing. However, the two side banks cannot be made to emit different sounds simultaneously* The system in short, does not have the full flexibility of the elaborate "Fantasound" setup, but it gives all the results of "tri- sonic" sound and in addition approaches the results of stereophonic reproduction. In terms of equipment, it requires three channels of variable-gain amplification to Vitasound's two; three sets of speakers backstage, and control facilities for fil tering, amplifying and rectifying the control frequen cies. Like the trisonic system, it needs only modifica tion of existing soundheads, not separate soundheads.