be+equal+to
131Equal-loudness contour — An equal loudness contour is a measure of sound pressure (dB SPL), over the frequency spectrum, for which a listener perceives a constant loudness when presented with pure steady tones. The unit of measurement for loudness levels is the phon, and …
132equal — /ee kweuhl/, adj., n., v., equaled, equaling or (esp. Brit.) equalled, equalling. adj. 1. as great as; the same as (often fol. by to or with): The velocity of sound is not equal to that of light. 2. like or alike in quantity, degree, value, etc.; …
