Yash does the first floor belong to you can you make changes there as well?

No

Yash,

You may need to install acoustic panels on the ceiling.

Twin layers of False ceiling solution from Saintgobain will additionally reduce noise.

For the traffic noise you can get the Sound proof Fenesta windows installed.

Acoustic panels call also be added to the walls and they act as a decorative element as well.

This shall help you a lot else try gifting a carpet to the neighbours ;)

Thanks,
Nitin
Cornerstone Designs, Bangalore.

HI

you can install acoustic panels

also there are wallpaper which has acoustic properties tocertain extent.

For outside noise check if your doors & windows are soundproof