Are there any device that exist that can completely block any loud noise in public places? I intend to use it in public places (i.e. coffee shop, park, bar) so I can work with little or without any distraction. Noise can range from people talking, cars driving by to jackhammer that is used in a nearby construction. I've considered anti noise ear plugs, noise isolation earphones and noise cancelling headphones but just seem to just lessen the noise but not completely block it. Are there any viable solution that exist?
You could also consider custom-molded in-ears. As they’re precisely fitted for your ears alone, not only they block out noise more effectively, they can also be extremely comfortable.
If you’re okay with deep insertion in-ears, you could check out the Etymotic ER4 as well. Or, consider foam eartips for your earphones.