2008/5/29 Rich Caloggero <rjc@mit.edu>:
Wow, very cool. Will chuck do delays that short? I assume it probably has
more to do with the speed of the hardware than anything inherent about
chuck?

I think it will, delay lines need not be a integer multiple of 1::samp either, at least not for a interpolating delay (which we have).

I'm not 100% sure what will happen if the delay length becomes less then a samp and you still want to use feedback. Feedback loops in ChucK Ugens will always add a single sample delay. You may have to fake this be putting a few delays in series.

Delaylines aren't especially hard on the CPU, the main cost is probably the interpolation but I can't imagine why that would take more for extremely short delays. It'd be a different issue if you wanted delaylines considderably shorter then a samp with feedback in one Ugen. Clearly that would create a need to interpolate multiple times  per sample and place some rather large demands on the quality of the interpolation.

BTW, I'm rather surprised that this technique was used in a guitar amp; I thought the sweetspot was relatively small? Wouldn't that be unpractical for guitar amps?

Yours,
Kas.