Strutt|Criteria|Curves|Sound Levels|RC-II inserts the Room Criterion (Mark II) curve into the active row of the spreadsheet. The user may enter the curve number into Column D of the active row.
Note that unlike curves such as the NC curve or NR Curve, which aim to describe 'equal-noisiness' or 'equal-loudness' contours, the RC curves represent an 'ideal' services spectrum that is subjectively 'neutral'.
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