Abstract
Procedures followed in the past have been inadequate for assuring an acceptable quality of sound. This paper deals particularly with the 16mm track which has greater need for sound quality control because of the narrower tolerances and the higher amount of image spread. It has been found that using a 6,000-cycle cross-modulation test gives more accurate control than the conventional 4,000-cycle signal. Commercial negative and print tolerances tend to produce some prints with unacceptable sound quality, so a simple additional control is recommended. This method uses a short, one-shot cross-modulation test on the negative and a simple cross-modulation distortion meter for analyzing the print. The meter has been designed to be economical to build, requires no power supply and can be used by operators with no special training. It indicates both amount and direction of density correction necessary to obtain optimum results. Using a single cross-modulation negative and the meter, a laboratory can improve the quality of its continuous printers and can establish the necessary print density variation from printer to printer to obtain the same cancellation.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call