"There are differences between different > sounds and their effect upon the human nervous system."
Well, yeah! How do you think you hear and distinguish language. Different sounds have different effects on the ear drum, auditory nerves, and impulses sent to the brain. No exactly profound or new insights, it would seem. If however you are implying that some sounds (devoid of symbolic representation) promote health, wealth or wisdom, then that is a huge flying leap over and beyond the quote above. A parallel logic might be: "Different objects have a different feel that others and THEREFORE, by touching this thing, you will gain infinite happiness happiness." Sounds more like a good bar line.
