[nicodjimenez]

Like others here, I wonder how well this really works, but I applaud the effort nonetheless and I hope to see progress in this area in the coming years!

Better sound blocking tech would really improve people's lives and stress levels, especially people who can only afford to live on busy streets in old apartments without proper sound proofing. No to mention people who want to do music in their apartments without bothering their neighbors.

[incompatible]

I'm not sure how you could use it for that. Well, you could put a couple of those things over your ears, but earmuffs already exist. More likely it would be useful for building better mufflers onto noisy equipment. A muffler on musical instruments? I could imagine it fitted to a trumpet perhaps.