Never heard the term before.
My guess
"Abnormal speech discrimintion" probably means "impaired speech descrimination". And that THAT in turn means either one of two things: that you are impaired in identifying individuals by their voices (like face blindness in the ear), OR that you are impaired in picking up emotion in a person's voice (tell an an angry tone from a nonangry tone,say). Just a guess. Havent googled it yet.
Just now googled it. I cant even find that exact phrase "abnormal speech discrimination" coming up, but I find academic papers that have to do with the issue of distinguishing human speech from background noise. So my above guess may be off. It probably means "being impaired in telling the human voice from background noise".
Last edited by naturalplastic on 17 May 2020, 1:09 pm, edited 1 time in total.