[PD] is there a way to implement [lop~] with raw filters?

Alexandre Torres Porres porres at gmail.com
Thu Sep 12 23:14:57 CEST 2013


Well, I've tried it now and looks I got it right, check the code below...
can you confirm if I nailed it please?

THANKS
Cheers

#N canvas 425 68 530 262 10;
#X obj 400 126 samplerate~;
#X obj 400 149 v sr_\$0;
#X obj 390 62 loadbang;
#X floatatom 154 74 0 0 0 0 - - -;
#X obj 157 51 hsl 128 15 0 7000 0 1 empty empty empty -2 -8 0 10 -262144
-1 -1 1600 1;
#X obj 121 159 rpole~;
#X obj 48 178 lop~;
#X obj 121 183 expr~ $v1 * (1 - $f2);
#X obj 154 130 expr 1 - $f1;
#X obj 58 70 noise~;
#X obj 115 215 dac~;
#X msg 410 86 \; pd dsp 1;
#X obj 154 102 expr $f1 * 2*pi_\$0 / sr_\$0;
#X obj 390 171 expr atan(1) * 4;
#X obj 390 192 v pi_\$0;
#X text 90 176 =;
#X connect 0 0 1 0;
#X connect 2 0 0 0;
#X connect 2 0 11 0;
#X connect 2 0 13 0;
#X connect 3 0 6 1;
#X connect 3 0 12 0;
#X connect 4 0 3 0;
#X connect 5 0 7 0;
#X connect 7 0 10 0;
#X connect 7 0 10 1;
#X connect 8 0 7 1;
#X connect 8 0 5 1;
#X connect 9 0 6 0;
#X connect 9 0 5 0;
#X connect 12 0 8 0;
#X connect 13 0 14 0;



2013/9/12 Miller Puckette <msp at ucsd.edu>

> Theory is in: http://msp.ucsd.edu/techniques/latest/book-html/node140.html
> and an example (actually a shelving filter but give the "rzero" a
> coefficient
> of zero to get a pure low-pass) : H11.shelving.pd
>
> cheers
> Miller
>
> On Thu, Sep 12, 2013 at 04:24:43PM -0300, Alexandre Torres Porres wrote:
> > Hi there, since it says [lop~] is a "one pole" filter, I was wondering if
> > using objects like [rpole~] or [cpole~] could do the job... but I'm not
> > even close to figure out if yes or not and why...
> >
> > anyone?
> >
> > thanks
>
> > _______________________________________________
> > Pd-list at iem.at mailing list
> > UNSUBSCRIBE and account-management ->
> http://lists.puredata.info/listinfo/pd-list
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20130912/29bbdef1/attachment.htm>


More information about the Pd-list mailing list