[chuck-users] Interesting stereo widening effect

Kassen signal.automatique at gmail.com
Thu May 29 12:56:22 EDT 2008

2008/5/29 Rich Caloggero <rjc at 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?

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