#N canvas 480 56 608 558 12;
#X declare -stdpath ./;
#X obj 225 247 sig~;
#X floatatom 225 216 5 0 0 0 - - - 0;
#X floatatom 259 277 5 0 0 0 - - - 0;
#X obj 34 14 vcf~;
#X text 52 484 see also:;
#X obj 130 484 bp~;
#X obj 192 309 vcf~ 1, f 10;
#X text 384 484 updated for Pd version 0.46;
#X text 126 430 (band-pass);
#X text 258 431 (low-pass);
#X text 126 413 real output;
#X text 245 413 imaginary output;
#X obj 164 484 bob~;
#X obj 131 243 noise~;
#X text 114 218 test input;
#X text 303 276 Q;
#X text 274 309 optional argument initializes Q;
#X obj 134 353 output~;
#X obj 259 353 output~;
#X obj 205 484 lop~;
#X obj 245 484 hip~;
#X obj 373 371 declare -stdpath ./;
#X obj 65 520 biquad~;
#X obj 124 519 slop~, f 7;
#X obj 183 519 cpole~, f 7;
#X obj 245 519 fexpr~;
#X text 301 519 - unfriendly filters;
#X obj 7 43 cnv 1 590 1 empty empty empty 8 12 0 13 #000000 #000000
0;
#N canvas 667 114 517 345 reference 0;
#X obj 9 42 cnv 5 490 5 empty empty INLETS: 8 18 0 13 #202020 #000000
0;
#X obj 9 187 cnv 2 490 2 empty empty OUTLETS: 8 12 0 13 #202020 #000000
0;
#X obj 9 277 cnv 2 490 2 empty empty ARGUMENT: 8 12 0 13 #202020 #000000
0;
#X obj 8 317 cnv 5 490 5 empty empty empty 8 18 0 13 #202020 #000000
0;
#X text 86 76 signal - audio signal to be filtered.;
#X text 93 95 clear - clear filter's memory., f 36;
#X obj 11 119 cnv 1 490 1 empty empty 2nd: 8 12 0 13 #7c7c7c #000000
0;
#X obj 28 14 vcf~;
#X text 70 14 - voltage-controlled band/low-pass filter;
#X text 87 126 signal - resonant frequency in Hz.;
#X obj 11 153 cnv 1 490 1 empty empty 3rd: 8 12 0 13 #7c7c7c #000000
0;
#X obj 11 71 cnv 1 490 1 empty empty 1st: 8 12 0 13 #7c7c7c #000000
0;
#X text 94 160 float - set Q.;
#X text 134 287 1) float - initial Q (default 0).;
#X obj 11 242 cnv 1 490 1 empty empty 2nd: 8 12 0 13 #7c7c7c #000000
0;
#X obj 11 211 cnv 1 490 1 empty empty 1st: 8 12 0 13 #7c7c7c #000000
0;
#X text 86 217 signal - real output (band-pass filtered signal).;
#X text 86 250 signal - imaginary output (band-pass filtered signal).
;
#X restore 414 14 pd reference;
#X text 512 14 <= click;
#X obj 7 465 cnv 1 590 1 empty empty empty 8 12 0 13 #000000 #000000
0;
#X text 76 14 - voltage-controlled band/low-pass filter;
#X text 270 216 resonant frequency in Hz;
#X text 25 53 [vcf~] is a resonant band-pass and low-pass filter that
takes either a control or an audio signal to set center frequency \,
which may thus change continuously in time as in an analog voltage
controlled filter (and unlike [bp~] and [lop~] that only take control
values). The "Q" or filter sharpness is still only set by control messages.
It is more expensive but more powerful than the [bp~] band-pass filter.
, f 78;
#X text 24 146 [vcf~] is implemented as a one-pole complex filter with
outlets for the real and imaginary value. These may be used as band-pass
and low-pass filter outputs \, or combined to allow other possibilities.
, f 78;
#X connect 0 0 6 1;
#X connect 1 0 0 0;
#X connect 2 0 6 2;
#X connect 6 0 17 1;
#X connect 6 0 17 0;
#X connect 6 1 18 0;
#X connect 6 1 18 1;
#X connect 13 0 6 0;
