Things we can do to reduce noise pollution besides spend 10s of millions on train walls

1. Maybe not use leaf blowers that you can hear 3 blocks away to move around small quantities of leaves and dirt, pretty sure brooms and rakes work just fine for that

2. Maybe not let your dogs bark for more than a few minutes at a time, no one wants to hear your dog sitting there barking and howling in your yard continuously

3. Those beeping car lock things, can't you just set it to 'click'? I am constantly sitting in my house, with the windows closed and everything hearing 'beep beep! beep beep!.' Is that really necessary?

These personally would do far more for me than the train walls. Give it a thought huh?