No... it still won't make much of a difference. You need to understand how turbochargers work. They're basically vacuums and air pressure-izers in one.
Let me see if I can explain... imagine taking a deep breath through a small straw. How does it compare to taking one without anything in your mouth? It's harder, right? Takes a longer time to suck in the same amount of air, right? Same goes for turbos. It doesn't really matter what the velocity of the air is in the straw/inlet hose. It's the volume that matters. That's why the best setup (for performance) is to have no inlet hose, no filter or anything at all. No straw. That's why, if you're set on getting an inlet hose, I would recommend getting a 3" one.
As for the turbo spool sound... no comment.