An increasing sound appearance is more salient than a decreasing one in complex stimuli.

Evidence

The change consisted in an increment of the marginal distribution in the selected frequency bins at a random point in time (referred to as change time ) during stimulus presentation. We chose to use an increment of the marginal distribution in two adjacent frequency bins on the basis that an appearance is more salient than its opposite in a complex acoustic stimulus (Constantino et al. — Dijk, Pim van, Physiology, Psychoacoustics and…, 3296