20 Sep
2008
20 Sep
'08
2:09 p.m.
Charles Henry wrote:
There's two problems with your patch. There's a sign error in one of the expr which calculates the imaginary value. The second problem (in the same expr) was a * vs / error ( you put "/ 2*$f1" instead of / 2 / $f1). Does that make a difference?
Anyway, I jiggled with it enough to get it right. Also, I put two other expr that check to make sure the poles / zeros are in fact complex rather than real.
cool, that's very nice.
however, there's some weird gain thing going on. check out the attached: notice how the left channel output (biquad~ output) drops gain, while the right channel output (handmade) does not.
any ideas how to fix this?
damian stewart | skype: damiansnz | damian@frey.co.nz frey | live art with machines | http://www.frey.co.nz