I never lived in any apartment really.
I was lucky.😊
But i worked when young in a store...
I read books between customers.
The neighbour above make some much noise with a rockband...
I did not know if it was a real one or playback...
I go up banging his door...
I only make the sign of cutting a throat...He close the door.
I go back and the silence i was used too go back...
I only make noise with my speakers when i was 15 years old...
No neigbours came for cutting my thoat... After this critical year i never listen window open at 100 decibels and more ...
i am pretty sure that my own isolation coupling decoupling sandwich is better than footers to control vibrations then bass sound level in the floor and ceilings ...