Nah, just use noise absorber instead of bare flat concrete; e.g. https://en.wikipedia.org/wiki/Escher_Stra%C3%9Fe_station https://en.wikipedia.org/wiki/Escher_S

Nah, just use noise absorber instead of bare flat concrete; e.g. https://en.wikipedia.org/wiki/Escher_Stra%C3%9Fe_station https://en.wikipedia.org/wiki/Escher_Stra%C3%9Fe_station shows some tactics for silencing ballast less track (not in the wiki article itself, sadly).