Right... I guess I've had it wrong in my head even though I know it's
all vectors of samples.  Thanks for the help (and for putting setksmps
in!)!

steven


On 1/7/06, Istvan Varga <istvan_v@fibermail.hu> wrote:
> On Saturday 07 January 2006 23:44, Steven Yi wrote:
>
> > (The lpf2 is a direct translation of lpf2 in Music4C.)  If I either
> > set ksmps=1 in the project or use setksmps 1 as in the above, things
> > sound correctly.  If I don't use setksmps or ksmps=1, the sound is
> > wrong.  However, looking at the code, all of the calculations in lpf2
> > *should* run at arate and calculate correctly without having to set
> > ksmps.
> >
> > Is there something wrong with my assumption or is there a bug either
> > in my code or in UDO's?
>
> Having a quick look at the code, it seems that there is a-rate
> feedback which requires ksmps=1 (as the feedback has a delay of
> ksmps samples); see lines quoted below:
>
> > afstate0      init 0
> > afstate1      init 0
> >
> > /* LPF2 CODE */
> >
> > av1   = ain + ifparms3 * afstate0  + ifparms4* afstate1;
> > av2   = afstate1 + 2.0 * afstate0;
> >
> > afstate1 = afstate0
> > afstate0 = av1
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