In addition to full length draperies able to block window and door glass, I found the use on glass of inexpensive tiny (almost invisible) Machina Dynamica's copper "flying saucers" facilitated acoustic and system performance improvement which is clearly appreciated, even if the mechanism of action is speculative.
This is independent of resonance reduction from long known helpful products such as Marigo Audio's VTS window or room tuning system.
This is independent of resonance reduction from long known helpful products such as Marigo Audio's VTS window or room tuning system.