oldmantime wrote:
low frequency is the biggest issue by far.
Yup. I was told the way to block LF sound was with lots of weight......a foot or so of sand ought to do it. I like the idea of just digging a hole, which would probably give the required insulation for the floor and "walls," but drainage might be difficult, unless the sewer is lower than your floor.
My cheap alternative is to mask the offending noise by playing a recording of pink noise. It's still noise but I don't find it anything like so invasive as other people's muzak and yelling. Probably because pink noise is more predictable and smooth, it's easier for the brain to screen out.
But the trouble with all these methods is that they trap the Aspie in a confined space. A better solution would be to silence the people who make the noise in the first place. I suppose you could try asking them to knock it off.