I don't have any advice, but can tell about my experiences with my DD12.
She is extremely sensitive to loud noises, hates wearing socks, long-sleeve shirts, pants of any kind, and shoes. Now that its winter and cold out its a daily struggle getting her into weather-appropriate clothing. When she was little she would cover her ears and hide if someone was yelling (I learned quickly that yelling is a bad idea, but people we visit do yell). If loud noise is prolonged (screaming infant) she will still cover her ears and if the noise continues and she can't get away (long car ride) she'll start crying herself. I've got to say that gets frustrating for me.
There are comical moments though- I should take a picture of her vacuuming sometime
. She lays one ear on her shoulder while covering her other ear with her free hand as she runs the vacuum.
