Reinforced concrete is not that good either. The best floors are made so that you have separate floor and ceiling and some foam in between. It's called "floatin

Reinforced concrete is not that good either. The best floors are made so that you have separate floor and ceiling and some foam in between. It's called "floating floor". https://en.wikipedia.org/wiki/Floating_floor https://en.wikipedia.org/wiki/Floating_floor It can be done with wood too. But I don't know how effective that is.