it's more like a wavelength in terms of how fast/slow and how large/small the "wave" is, faster being a higher mood setting (joyousness; breathlessness), and slower being a lower mood setting (glum; tired).
also the size of the waves also depend on mood.
for example, jagged-like spikes usually represent some form of high kind-of-malicious mood (anger; EEEVVIIILL) and smoother line spikes being lower moods (again, tired; chill)
it just all depends on the mood
EDIT: if that's what you meant then sure; im not entirely too sure on what sines are (i glimpsed at the wikipedia article about it; i'll read further into it later)