The pulse and triangle waveforms seem to generate
some audiable and unplesant clicking noises when
rendering fundamental frequencies above 10 khz. I'm
not sure why this happens, but my guess is that it has
something to do with the sampling process. Perhaps the
waveforms lose their shape at these high frequencies as
a result of the limits imposed by the sampling
frequency. Possible solution: impose a synthesis rule
that reverts all waves to sinusoidal when the frequency
is above a certain limit.
