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+#N canvas 212 185 577 450 10;
+#X text 15 35 Bandpass filter controllable by center frequency and
+Q;
+#X obj 32 382 dac~;
+#X obj 32 343 *~ 0.2;
+#X floatatom 160 294 0 0 0 0 - - -;
+#X msg 133 227 200 \, 10000 4000;
+#X obj 31 210 noise~;
+#X text 36 226 input signal;
+#X text 133 211 center freq;
+#X text 88 250 gain;
+#X text 172 325 optional arguments set values of gain \, center frequency
+\, and Q (default 0 \, 0 \, 0.01);
+#X text 88 182 list sets gain \, cf \, q (works unless there are any
+signal inputs for filter parameters);
+#X text 42 316 filtered output;
+#X text 15 62 reson~ implements the following filter equation: y[n]
+= gain * (x[n] - r * x[n-2]) + c1 * y[n-1] + c2 * y[n-2] \, where r
+\, c1 \, and c2 are parameters calculated from the input center frequency
+and Q. Q is the filter bandwidth divided by center frequency. Inputs
+can be floats or signals. The specification is similar to the nres
+unit generator in cmusic.;
+#X obj 32 294 reson~ 1 200 23;
+#X obj 133 250 Line~ 200;
+#X floatatom 60 254 0 0 0 0 - - -;
+#X text 158 276 Q: Try range of 1-100;
+#X connect 2 0 1 0;
+#X connect 2 0 1 1;
+#X connect 3 0 13 3;
+#X connect 4 0 14 0;
+#X connect 5 0 13 0;
+#X connect 13 0 2 0;
+#X connect 14 0 13 2;
+#X connect 15 0 13 1;