Problems with Sensory Overload

My children (3 teens---2 still at home--plus a 3-yr-old) all have Asperger's. They have the disability as well as dealing with others (including one parent) who also have Asperger's. As a result, people are oversensitive to sensory input and comments and, of course, go from 0 to 100 in seconds. I have a great deal of difficulty heading off the mood escalations and defusing the situation once it has started. I need any suggestions for quicker resolution, etc. that will help us function more effectively. 
 
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