Question

how you can help in reducing noise pollution at your level

Answer 1

We can help in reducing noise pollution at your level are:
Turn off your electronics when not in use.
Sound proof your space.
Mask or cancel noise.
Earplugs
Move

Answer 2

1) Reduce noise at its source -no blowing horns, put proper silencers in vehicles.
2) Rows of trees by the side of roads, curtains, doors in houses reduce noise to some extent.
3) Strict laws prohibiting blowing of car horns, loudspeakers, etc. near school & hospitals.
4) Personal protection-holding our hands over ears, cotton plugs, etc. when noise is too loud.