Oh, and a filter is a personally-fitted ear canal piece that selectively screens out certain frequencies, in order to make the auditory environment less chaotic for the wearer, with the primary objective of improving their experience of speech clarity, and the secondary objective of reducing sensory overload.
Thanks Aeh. Yes, this is essentially what the filter does and we went to ABLE kids in Colorado for the assessment and the filter. The neuropsych gave us a provisional diagnosis due to test results showing some possible auditory issues, so we went to ABLE to get a full auditory assessment.
