Occluding one ear cuts predicted loudness there by 52 percent.

Evidence

First, we conducted an analysis of the virtual stimuli by applying the Moore and Glasberg ( 1996a , b ) loudness model. Since similar effects were observed with noise as with speech, it was thought unnecessay to employ the model for time-varying sounds (Glasberg and Moore 2002 ). Despite presentation of stimuli from one side, the difference in predicted loudness at each unoccluded ear differed by only 4 %. The interaural level difference was small due to the room reverberation. When the left ear was occluded, the predicted loudness at this ear fell by 52 %. Older models assume that binaural loudness is the sum of that for each ear, but more recent models predict less binaural summation by invoking an inhibitory mechanism (Moore and Glasberg 2007 ). — Dijk, Pim van, Physiology, Psychoacoustics and…, 1548

Categorization

• XREF: Connects to the reader’s broader concern with binaural loudness summation and Moore and Glasberg’s inhibitory loudness model vs. older summation models.