3 ms·

Well, a double walled enclosure with vacuum inbetween would seal out a lot. Plus you could market it as "the double vacuum". Profit!

• jacquesm 13y ago
  The problem is the outflowing air. That's where the noise comes from.
  • skore 13y ago
    Well, that's where "lots of corners in the airpipe design" comes in. That, plus what I said before are big points in making something big.