I've noticed this, too. It sounds like the noise you'd get if you were just using [line] to change the frequency. My guess is the cutoff frequency is being sampled and held at the block boundaries. If you put these objects in a patch with [block~ 1], it goes away.
.mmb
On Wed, Mar 2, 2011 at 11:25 AM, Luka Princic // Nova deViator < nova@deviator.si> wrote:
hi,
just a quick question, is it normal or somewhat on purpose that all versions of low pass filters in iemlib (from lp2 - lp10 and cheb, butt, bess and crit) exhibit slight high pitched jitter when cutoff frequency is being dynamicly changed? is it a nature of such filter or just a type of implementation that somewhat doesn't take care of interpolation (if interpolation is a problem at all)?
any thoughts welcome...
is there a way i could avoid that jitter with these filters?
is there some other high-pole low pass filter in some other library i could use?
sure, i can always use series of [lop~] ..
best, luka
-- sujet est machinique! Nova deViator ¤ http://deviator.si ¤ http://skylined.org ¤
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