All Dash 8s delivered from the second quarter of 1996 (including all Series 400s) include the Active Noise and Vibration Suppression (ANVS) system designed to reduce cabin noise and vibration levels to nearly those of jet airliners. To emphasize their quietness, Bombardier renamed the Dash 8 models as the Q-Series turboprops (Q200, Q300 and Q400).
http://en.wikipedia.org/wiki/Bombardier_Dash_8
Някой да има впечатления от тази система по време на полет? Дали е ефикасна?