Jamie Drouin’s minimalist sound installations focus on the extreme subtleties of auditory perception. In GRADIENT (2014), the speakers emit a simple white noise static, along with a filter, which systematically opens up to reveal lower frequencies over the first 20 minutes, and then switches roles to slowly remove higher frequencies over the second half. With this formal system, the white noise takes on various perceptual shifts and spatial associations through a gradual process of sonic addition and subtraction.