... by using a "plasma speaker" in active noise cancellation. Ever noted how quiet the world is when its snowing? Fluffy polyfill can do some of the same trick

... by using a "plasma speaker" in active noise cancellation. Ever noted how quiet the world is when its snowing? Fluffy polyfill can do some of the same trick; but it takes up so much volume that its hardly ever worth using. Also remember flammability concerns in soundproofing materials: https://en.wikipedia.org/wiki/The_Station_nightclub_fire https://en.wikipedia.org/wiki/The_Station_nightclub_fire