No change with pressure changes..I paraglide now and occasionally glide in france including the odd aeros and spins..normal deafness associated with not clearing the ears which disappears once I hold my nose and blow or swallow...Have some drastic pressure changes when I do spiral dives to loose height paragliding ..probably three thousand fpm for short periods (limited because of G). No problem except that the wind noise in my helmet at high speed does temporarily make it worse. Similar but longer lasting effect using a circular saw, router or planer...normally use ear defenders.
Hearing damage started when I was in the army cadet force using rifles..at the same time scrambled on two strokes..got worse doing outside checks on the Trident..BEA were negligent as we had zero protection whereas SR issued ear protection to all crew members.