After some advice please 
We've recently moved from a 3 storey house where the living room was located on the middle floor at the rear, to a 2 storey where the living room is at the front of the house and has a large bay window.
My dog is not used to see people pass the house or go by the window and this seems to be stressing him out, he growls and sometimes barks while jumped up at the window and is struggling to settle in here if the blinds are open.
Does anyone know how I could encourage him to settle and show that the people passing aren't scary and he can watch them calmly? I don't want to sit with the blinds shut all the time if I can help it 
He is very good with people and meets strangers happily so this is a totally new issue for us.
Thanks!