is this Dihua the street close to the train station?
I was just at a Tai (as in Tai Tai -wife) and (i think) Yuan…so Ti Yuan street close there and saw many places selling sound proofing stuff.
But the thing is that soundproofing material doesn’t mean by default is any good at controlling certain frequencies. I’m invetigating right now what to with the walls.
The floor with the jigsaw tiles helps…but again they control certain frequencies and the carpet will help to control lower freq. But that’s just a start.
I’m still learning mysef but mid and low mid freq, flutter echo need to be controlled mostly.
Auralex makes a nice solution but shipping to Taiwan kills me.