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.
If you don’t have the permission and money for expensive renovations, then high quality earplugs is the answer. I have gone through a lot of different earplug products because of the discomfort of wearing them.
These 3M ones, I can wear for 12 hours straight, no problems. https://www.amazon.ca/dp/B000I7LH8Y
If you do want to get serious and do the work, base your noise-reduction system around this product: https://sonopan.com/