A shorter version of the Weiler-Hood model for loudness coding during adaptation

A graphic/algebraic model proposed by Weiler and Hood (Audiol., 1977, 16, 499-506) for loudness coding during auditory adaptation, assuming a fixed loss of loudness units for a given adaptation to any test intensity, was shown to describe several sets of adaptation data quite well. The present paper offers a more convenient algebraic formula using only the obtained post-adaptation balance level at the baseline intensity rather than a smoothed adaptation function. This shortening is at the expense of a somewhat increased influence of random fluctuations.