I have been using the SampleCloud prototype with very short "GrainDur", so short the grains become wavetables rather than "normal" sample clips. In this way, the frequency of the heard sound becomes 1/GrainDur; so a GrainDur of 0.0023 s is roughly equivalent to a pitch of 440Hz (A3). I also use a keyboard and set GrainDur to 1/!KeyPitch, meaning I can play on a keyboard and the "wavetable" is modified to produce the tempered pitch. Traversing the TimeIndex in this scenario can produce changing timbres whilst the pitch is modified by a keyboard.
My question is whether there is a lower limit to the value in GrainDur - ie is there a maximum pitch frequency that can be produced in this way?
If I input GrainDur values manually, 0.00114 will sound but 0.00113 will not, this is roucghly equivalent to B4/Bb4 (almost two ocatves above middle C). When I play B4/Bb4 on a keyboard the pitch no longer changes with each ascending note. I thought maybe this was due to sample rate, so I doubled that, but the problem still remained. At a guess I would think that GranDur has been limited programatically?
Is there anyway of producing smaller values in GrainDur so I get an extended range to my pitch set?