> One issue is than ANC can't predict and sometimes react fast enough to sudden loud noises, so if an engine backfires next to you, your ANC headphones will tak

> One issue is than ANC can't predict and sometimes react fast enough to sudden loud noises, so if an engine backfires next to you, your ANC headphones will take a few miliseconds to catch up and will allow the original sound (minus their inherent (passive) sound isolation) to reach your ear. Are you sure of this? I thought audio computation was fast enough for avoiding this issue.