Unpleasant neighbour noise

I am an owner occupier who lives one floor above another owner occupier home to mum/dad and two primary school age kids. The problem is on most days there is loud yelling, screaming and crying originating from the downstairs unit. This is very unpleasant, and can't be good for the kids and parents either. Have tried closing windows to block the noise, but noise is still audible and unpleasant.

Haven't talked to the people who are source of noise, not sure if they would respond positively.

What can be done about this?