Natalie Braginsky uploaded some serious noise about two weeks ago, two tracks of digital vexations. There “.linexp,” five minutes of brief shots of razor-edged pixel disturbances, and “total emotional collapse number four,” which embraces a thick screen of randomness. The latter focuses on the sort of sounds that often suggest the roiling sea but here seem more like an avalanche on — to borrow and bend a phrase from Godflesh — looped repeat. It takes awhile to get underway, opening with short bursts of fireworks that eventually fill the sky, the whole thing running for four-plus minutes. It’s “.linexp” that presents itself as ready for more general consumption. The noise miniatures bring to mind road-side snapshots of robotic collisions and sad-toned circuits failing in public.