view examples/08-PureData/envelopeTrigger/_main.pd @ 531:ddb86944e138 prerelease

cleaned up all pd examples (and removed some). added polysynth and vangelisiser to instruments examples

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#X text 29 17 SAMPLE-ACCURATE ENVELOPE TRIGGER;
#X text 29 27 ================================;
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#X restore 34 1026 graph;
#X text 475 477 if greater than threshold output 1;
#X text 513 521 differentiator;
#X text 512 539 (generates impulse on positive trigger (0->1);
#X text 107 620 signal-rate counter;
#X text 497 618 rpole~ coeff to 0;
#X text 410 1004 pre-generated envelope;
#X obj 112 692 *~;
#X obj 399 476 hv_gte~;
#X obj 399 592 hv_lte~;
#X text 116 891 kickdrum 101 :);
#X obj 399 392 receive~ excitationSignal;
#X obj 438 456 receive~ threshold;
#X obj 112 672 receive~ envDuration;
#X obj 38 311 send~ excitationSignal;
#X obj 198 311 send~ threshold;
#X obj 318 311 send~ envDuration;
#X obj 33 967 dac~;
#X text 29 57 Sample-accurate signal processing can often be hard to
;
#X text 29 71 do in puredata \, which generally works on a per-block
;
#X text 29 85 basis. In this example we use a combination of;
#X text 95 102 and;
#X obj 125 102 rpole~;
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#X obj 444 507 sig~ 1;
#X obj 399 528 rzero~ 1;
#X text 187 102 objects to perform;
#X text 29 120 sample-accurate envelope triggering based on the;
#X text 29 134 signal fed into the first audio channel.;
#X obj 38 210 adc~ 1;
#X obj 198 240 adc~ 3;
#X obj 318 280 adc~ 4;
#X text 252 240 use a potentiometer on first analog in to set;
#X text 252 253 triggering threshold...;
#X text 382 280 ...second analog in sets envelope duration;
#X obj 32 102 rzero~;
#X text 605 12 ............................;
#X text 605 22 . ____ ._____ _ .......___ .;
#X text 605 32 .| __ )| ____| |....../ _ |.;
#X text 605 52 .| |_) | |___| |___ / ___ |.;
#X text 605 62 .|____/|_____|_____/_/..._|.io;
#X text 605 72 ............................;
#X text 605 42 .| __ || __|.| |...../ _| |.;
#X text 475 424 take absolute value of signal;
#X text 497 630 (coefficient of 1 causes rpole~ to;
#X text 497 643 accumulate input samples);
#X text 108 542 setting input to (1/sampleRate) means;
#X text 108 555 rpole~ counts seconds when its coefficient;
#X text 108 569 is set to 1 (resets when 0);
#X text 147 822 use envelope value for volume and frequency;
#X text 479 594 -> boolean (x != x);
#X text 92 210 Left audio input for excitation (a piezo disk works
well);
#X text 111 767 multiplies counter output allowing to alter;
#X text 111 781 playback speed of envelope;
#X text 497 607 resets counter by briefly setting;
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