Title :
The Measurement of Transcription-Turntable Speed Variation
Author_Institution :
RCA Manufacturing Company, Indianapolis, Indiana
Abstract :
Speed constancy or freedom from speed fluctuation ("wows") is becoming more important due to the widespread use of records in radio broadcasting. Equipment of a simplified nature which will evaluate the wow content as a single figure is needed for standardization purposes. Some of the existing equipment is reviewed, and the importance of having a meter with proper ballistic constants for measuring the wow content is shown.
Keywords :
Acoustic testing; Disk recording; Distortion measurement; Ear; Fluctuations; Headphones; Manufacturing; Radio broadcasting; Standardization; Velocity measurement;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1943.234345
