Well you can start training your mind to stop imagining that the noise is something bad or scary and start rationalizing about what the noise really is or go and investigate the noise. I'ts a matter of breaking a habit by changing your way of thinking.
Well live in China for at least 2 yrs and you will get so used to loud noises you will never be annoyed or scared ha ha!
make some noise also..=P
Noises don't scare me :P
Don't watch scary movies
plug ur ears (: