The difference between the two, is that STOMP uses a visual and auditory language that already exists.
2.
Interestingly, the part of the brain apparently responsible for pitch recognition is the same planum temporale that's involved in auditory language comprehension.
3.
Both visual perceptual and auditory language deficits were thought to possess a strong cognitive component and a weak relationship to underlying sensory processing deficits, so they are not considered central deficits in many models of sensory processing.