Although Auditory Processing Disorder (APD) has been described in the literature, there is a lack of consensus regarding the nature of the disorder. An early definition was the inability to attend to, discriminate, or understand speech under less than optimal conditions even though peripheral hearing and intelligence is within normal limits. This disability is more pronounced when listening to distorted speech, in noise, or in other poor acoustic environments. A recent definition of APD was described by the British Society of Audiology as listening difficulties in the absence of any hearing loss. According to a definition by the American Speech-Language Hearing Association persons affected with APD have difficulty with sound localization, auditory discrimination, auditory pattern recognition, perceiving temporal (timing) aspects of sound, and understanding speech that is competing...