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diff --git a/pd/doc/3.audio.examples/C10.monophonic.synth.pd b/pd/doc/3.audio.examples/C10.monophonic.synth.pd
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@@ -0,0 +1,107 @@
+#N canvas 57 27 578 769 12;
+#X obj 13 514 mtof;
+#X obj 13 463 stripnote;
+#X obj 164 519 select;
+#X obj 155 413 float;
+#X obj 164 381 t b f;
+#X obj 164 487 float;
+#X text 217 367 f - store pitch below;
+#X text 209 415 velocity stored here;
+#X text 128 459 off;
+#X text 216 486 recall pitch;
+#X text 132 2 MONOPHONIC MIDI SYNTH;
+#X obj 13 340 unpack;
+#X obj 13 273 notein;
+#X obj 13 300 pack;
+#X obj 94 570 line~;
+#X msg 94 544 \$1 100;
+#X msg 164 545 0 1000;
+#X text 15 75 First \, at top \, incoming MIDI notes are parsed and
+used to set pitch and trigger an ADSR envelope. Second \, the envelope
+generator itself has been extended to offer controls over the time
+and target values via number boxes.;
+#X text 17 21 This patch shows how to make a monophonic synthesizer
+that could be controlled from a MIDI or voltage-control keyboard--in
+this example we assume MIDI.;
+#X msg 152 290 55 64;
+#X msg 152 316 55 0;
+#X msg 95 291 48 64;
+#X msg 95 317 48 0;
+#X text 14 142 The note-off testing is complicated by the fact that
+we have to test both that the velocity is zero \, and further that
+the note-off pitch matches the pitch that is now playing (the most
+recent note-on pitch.);
+#X text 218 387 b - bang to recall velocity;
+#X obj 155 442 sel 0;
+#X text 177 463 on;
+#X obj 16 712 output~;
+#X obj 15 688 hip~ 5;
+#X obj 14 642 *~;
+#X obj 13 541 phasor~;
+#X obj 13 565 -~ 0.5;
+#X obj 14 593 cos~;
+#X obj 102 617 *~;
+#X obj 14 617 +~ 1;
+#X text 332 741 updated for Pd version 0.37;
+#X obj 102 665 cos~;
+#X msg 95 268 48 128;
+#X text 18 491 pitch;
+#X text 19 443 messages;
+#X text 210 441 test for note on or off;
+#X text 227 520 test against latest;
+#X text 270 535 note-on pitch;
+#X text 18 407 filter;
+#X text 19 425 note-on;
+#X obj 15 664 *~;
+#X obj 94 517 / 127;
+#X text 14 208 The synthesis technique is the same as in the previous
+patch \, done in a simpler (but less general) way with a cos~ object
+replacing the wavetable lookup.;
+#X text 148 571 envelope generator now controls amplitude;
+#X text 317 589 as well as grain size;
+#X obj 102 641 *~ 2;
+#X obj 123 594 +~ 0.5;
+#X text 148 687 The +~ 0.5 and *~ 2 are fudge factors.;
+#X text 148 648 This replaces the tabread4~;
+#X text 146 668 in the previous patch.;
+#X text 211 290 These buttons simulate MIDI input.;
+#X connect 0 0 30 0;
+#X connect 1 0 2 1;
+#X connect 1 0 0 0;
+#X connect 2 0 16 0;
+#X connect 3 0 25 0;
+#X connect 4 0 3 0;
+#X connect 4 1 5 1;
+#X connect 5 0 2 0;
+#X connect 11 0 1 0;
+#X connect 11 0 4 0;
+#X connect 11 1 1 1;
+#X connect 11 1 3 1;
+#X connect 12 0 13 0;
+#X connect 12 1 13 1;
+#X connect 13 0 11 0;
+#X connect 14 0 45 1;
+#X connect 14 0 51 0;
+#X connect 15 0 14 0;
+#X connect 16 0 14 0;
+#X connect 19 0 11 0;
+#X connect 20 0 11 0;
+#X connect 21 0 11 0;
+#X connect 22 0 11 0;
+#X connect 25 0 5 0;
+#X connect 25 1 46 0;
+#X connect 28 0 27 0;
+#X connect 28 0 27 1;
+#X connect 29 0 45 0;
+#X connect 30 0 31 0;
+#X connect 31 0 33 0;
+#X connect 31 0 32 0;
+#X connect 32 0 34 0;
+#X connect 33 0 50 0;
+#X connect 34 0 29 0;
+#X connect 36 0 29 1;
+#X connect 37 0 11 0;
+#X connect 45 0 28 0;
+#X connect 46 0 15 0;
+#X connect 50 0 36 0;
+#X connect 51 0 33 1;