puredata-doc 0.46.7-3 / usr / share / puredata / doc / 3.audio.examples / H10.measurement.pd

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#X text 617 296 pi;
#X text 610 226 2pi;
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#X floatatom 35 280 5 0 0 0 - - -, f 5;
#X text 623 23 2;
#X text 106 25 MEASURING FILTER FREQUENCY AND PHASE RESPONSE;
#X text 612 413 updated for Pd version 0.39;
#X text 693 176 frequency;
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#X text 816 175 44100;
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#X text 35 195 This subpatch loads initial;
#X text 31 219 values in number boxes.;
#X msg 22 91 \; \$1-freq 3000 \; \$1-q 3;
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#X restore 287 381 pd startup;
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#X text 14 49 You can use the "filter-graph1" and "filter-graph2" abstractions
as shown to test filters. Connect them as shown with a filter between
them. Try varying the parameters and/or substituting other filters.
;
#X text 577 158 gain=0;
#X text 576 358 phase=0;
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#X obj 229 341 bp~;
#X text 46 233 <-- compute;
#X text 36 297 index;
#X text 292 285 <-- center frequency;
#X text 290 310 <-- "Q";
#X text 11 117 "filter-graph1" takes as arguments the number of points
to graph and the frequency range. "filter-graph2 takes as arguments
the name of a table to hold the (frequency dependent) gain \, and another
\, if specified \, for the phase.;
#X text 10 184 You can edit this patch to replace "bp" with any other
filter you're curious about.;
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