on 2013-09-12 at 22:19 Oeyvind Brandtsegg wrote:

> There might be some inharmonic components generated depending on the
> relationship between grain rate and the frequency of the waveform inside
> each grain.

should this happen, really? i can't say i fully understand the maths of
the DSP involved, but i think the spectrum should be harmonic in all cases. 

i modified the previous orchestra a little bit to experiment with
different relationships between fundamental and formant frequencies, and i
think i discovered something interesting: at sr=48000 and 96000 the output
is fairly clean in all cases, while at sr=44100 there are lots of
sub-harmonics, that is harmonics of a fundamental = 1/4 of the grain rate.
i attach the modified orchestra.