How to Make the Silentest Room on the Planet

The sound waves leave your mouth if you're speaking and they go off until they fade away. The way sound works is, we almost never hear something that hasn't bounced off of something already. Everything is a reflection or an echo or a wave. And outdoors, it's less so, but you have more sound pollution. You can watch Tarsam Singh sings the fall in this room. Or really any TarsamSingh movie; there are no echoes in it. It was built out of a BDSM nightmare to be quiet.