Auditory processing refers to how the brain interprets sounds perceived by the ears. Put simply, it's what the brain does with what the ears hear. The brain processes several aspects of the auditory information perceived by the ears, such as: the origin of a sound, the differentiation between speech and other noises, the recognition of differences between sounds, the ability to remember them and recognize sound patterns, to name a few.1
Auditory Processing Disorder (APD) is the difficulty in processing and understanding information that has been said verbally.