1 files changed, 38 insertions, 0 deletions
diff --git a/externals/build/doc/help-bandpass.pd b/externals/build/doc/help-bandpass.pd
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+++ b/externals/build/doc/help-bandpass.pd
@@ -0,0 +1,38 @@
+#N canvas 295 68 622 469 10;
+#X obj 77 199 print;
+#X floatatom 77 114 0 0 0;
+#X floatatom 139 114 0 0 0;
+#X msg 360 109 \; paint 0;
+#X obj 164 196 filtgain;
+#X msg 91 138 bang;
+#X text 139 93 bandwidth (0 - 100);
+#X text 6 334 See also:;
+#X obj 72 335 bandpass;
+#X obj 139 336 notch;
+#X obj 195 337 lowpass;
+#X obj 247 336 highpass;
+#X obj 247 358 equalizer;
+#X obj 72 357 highshelf;
+#X obj 139 357 lowshelf;
+#X obj 195 357 hlshelf;
+#X text 75 226 These filters are all controlled by a bandwidth which
+is expressed in octaves. A bandwidth of 100 is equivalent to one octave.
+;
+#X text 358 25 click first;
+#X text 186 159 click on filtgain to view frequency plot;
+#X text 76 12 Bandpass coefficients for biquad~;
+#X text 70 26 ===================================;
+#X text 6 393 (C) Guenter Geiger 2000;
+#X text 75 92 frequency;
+#X text 75 268 Attention \, only the left inlet triggers new coefficients
+for biquad~;
+#X obj 77 160 bandpass 4000 33;
+#X obj 33 114 r doit;
+#X msg 360 45 \; pd dsp 1 \; paint 1 \; doit bang \;;
+#X connect 1 0 24 0;
+#X connect 2 0 24 1;
+#X connect 2 0 5 0;
+#X connect 5 0 24 0;
+#X connect 24 0 0 0;
+#X connect 24 0 4 0;
+#X connect 25 0 5 0;