I’m autistic with relatively high sound sensitivity. I’m wondering if another autistic person in this community used any soundproofing in an apartment that actually reduced noise coming from a busy street. There are a lot of different products out there and I don’t want to buy something that doesn’t work.
The only thing that would effectively work would be mass loaded vinyl which you would need to cover all 6 sides of your room in, which is usually done before putting up the walls because its a heavy rubbery fabric.
And it’s expensive.
Everything else is acoustic stuff which would really only prevent sound from escaping the room too easily.
Would probably go for the soundproof headphones like others have said. Cheap and effective.