Thanks, Julius. Would the other interpolation algorithms be more stable? For example, the allpass ones? I'd assume that the linear interpolation one is always stable and perhaps they could be alright for infrasonic rate modulations.
Cheers, Dario <http://dariosanfilippo.tumblr.com> On Wed, 20 Feb 2019 at 07:13, Julius Smith <j...@ccrma.stanford.edu> wrote: > Did you try -double ? > > It sounds like you may be pushing fdelayltv farther than anyone else to > date, so that could be where the trouble is. We may need to protect it > from small denominators. > > - Julius > > On Tue, Feb 19, 2019 at 2:32 PM Dario Sanfilippo < > sanfilippo.da...@gmail.com> wrote: > >> Hello, list. >> >> I am experiencing some problems with NANs and I sometimes don't >> understand where they come from. >> >> I have replaced all divisions with the condition that if the divisor is >> 0, the output is 0, otherwise it is x1/x2. >> >> I'm working with a self-oscillating FDN which uses tanh function for >> stability processing. There are also 6th-order fdelayltv units and the >> other processing in the system is mainly about 1-pole and 1-p-1-z filters >> that I have implemented in Faust. So there is arithmetic, some >> trigonometric functions and some other math like abs, min, max, sqrt and >> pow. >> >> I've tested the tanh function by putting it within a feedback loop with a >> huge feedback coefficient and it simply clips to 1. >> >> Are the fdalyltv likely to produce NANs is the signal setting the delay >> is not within the expected range? >> >> In your experience, what else is likely to produce NANs? >> >> Thanks, >> Dario >> _______________________________________________ >> Faudiostream-users mailing list >> Faudiostream-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/faudiostream-users >> > > > -- > > Julius O. Smith III <j...@ccrma.stanford.edu> > Professor of Music and, by courtesy, Electrical Engineering > CCRMA, Stanford University > http://ccrma.stanford.edu/~jos/ <http://ccrma.stanford.edu/> >
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