DocumentCode
1203497
Title
Some Recent Developments in Record Reproducing Systems
Author
Beers, G.L. ; Sinnett, C.M.
Author_Institution
RCA Manufacturing Company, Camden, New Jersey
Volume
31
Issue
4
fYear
1943
fDate
4/1/1943 12:00:00 AM
Firstpage
138
Lastpage
146
Abstract
Several factors of importance in obtaining satisfactory reproduction of sound from lateral-cut phonograph records are considered. An experimental record reproducing system employing the principles of frequency modulation is described and data are supplied on the measured and calculated performance characteristics of the system. Curves are included showing the vertical force required for satisfactory tracking with the experimental frequency-modulation pickup as compared with other pickups of conventional design.
Keywords
Acoustic propagation; Adders; Audio systems; Frequency measurement; Frequency modulation; Helium; Impedance; Interference; Marketing and sales; Pistons;
fLanguage
English
Journal_Title
Proceedings of the IRE
Publisher
ieee
ISSN
0096-8390
Type
jour
DOI
10.1109/JRPROC.1943.229731
Filename
1694700
Link To Document