Cheers, TYVM for mentioning this. I bought this DVD [1] and will bring this subject up in my local autism group (I got a diagnosis as well). There are many more reasons for us to get her checked for the spectrum (me getting diagnosis was an eye opener for sure). I suspect this proposed disability (it isn't part of DSM or even ICD) might be linked to autism. At the very least, there's more sound related issues such as light sleep, exceptional hearing, and sensitivity to emotion in sound. Part of autism is under- and oversensitivity.

[1] http://www.quietpleasefilm.com/about-2/