If the processional recordist is to achieve maximum results from the use of magnetic recording apparatus, standardization among recorders of such parameters as azimuth alignment, equalization, and bias level is a necessity. Precise instrumentation for such adjustments is extensive and expensive, which leads, on some occasions, to neglect. Most adjustments necessary to correct operation can be made with comparatively simple instrumentation and a Standard Tape of adequate precision. The manufacture of such tapes requires precision even beyond the normal necessities of high quality mastering. The method of manufacture and quality control is described, and the application of the tape to standard precision adjustment among recorders is explained.
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