puredata-doc 0.46.7-3 / usr / share / puredata / doc / 3.audio.examples / D03.envelope.dB.pd

#N canvas 158 69 674 673 12;
#X obj 32 80 r trigger;
#X text 85 8 USING ADSR'S OUTPUT AS dB;
#X obj 32 131 tabread4~ dbtorms;
#N canvas 0 0 450 300 graph1 0;
#X array dbtorms 123 float 1;
#A 0 0 0 1.25893e-05 1.41254e-05 1.58489e-05 1.77828e-05 1.99526e-05
2.23872e-05 2.51189e-05 2.81838e-05 3.16228e-05 3.54813e-05 3.98107e-05
4.46684e-05 5.01187e-05 5.62341e-05 6.30957e-05 7.07946e-05 7.94328e-05
8.91251e-05 1e-04 0.000112202 0.000125893 0.000141254 0.000158489 0.000177828
0.000199526 0.000223872 0.000251189 0.000281838 0.000316228 0.000354813
0.000398107 0.000446684 0.000501187 0.000562341 0.000630957 0.000707946
0.000794328 0.000891251 0.001 0.00112202 0.00125893 0.00141254 0.00158489
0.00177828 0.00199526 0.00223872 0.00251189 0.00281838 0.00316228 0.00354813
0.00398107 0.00446684 0.00501187 0.00562341 0.00630957 0.00707946 0.00794328
0.00891251 0.01 0.0112202 0.0125893 0.0141254 0.0158489 0.0177828 0.0199526
0.0223872 0.0251189 0.0281838 0.0316228 0.0354813 0.0398107 0.0446684
0.0501187 0.0562341 0.0630957 0.0707946 0.0794328 0.0891251 0.1 0.112202
0.125893 0.141254 0.158489 0.177828 0.199526 0.223872 0.251189 0.281838
0.316228 0.354813 0.398107 0.446684 0.501187 0.562341 0.630957 0.707946
0.794328 0.891251 1 1.12202 1.25893 1.41254 1.58489 1.77828 1.99526
2.23872 2.51189 2.81838 3.16228 3.54813 3.98107 4.46684 5.01187 5.62341
6.30957 7.07946 7.94328 8.91251 10 11.2202 12.5893;
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#X restore 387 83 graph;
#N canvas 461 495 663 358 make-table 0;
#X obj 97 195 moses 2;
#X msg 81 44 bang;
#X obj 81 73 t b b;
#X obj 152 134 f;
#X obj 190 134 + 1;
#X msg 174 106 0;
#X obj 81 102 until;
#X obj 73 162 sel 122;
#X msg 97 226 0;
#X obj 141 227 dbtorms;
#X obj 152 162 t f f;
#X obj 97 259 tabwrite dbtorms;
#X floatatom 435 103 0 0 0 0 - - -;
#X floatatom 435 186 0 0 0 0 - - -;
#X obj 435 157 tabread4 dbtorms;
#X floatatom 331 183 0 0 0 0 - - -;
#X obj 331 154 dbtorms;
#X text 35 12 bang to recalculate the table;
#X text 268 62 check accuracy of reading table against;
#X text 268 81 the "real" dbtorms object.;
#X connect 0 0 8 0;
#X connect 0 1 9 0;
#X connect 1 0 2 0;
#X connect 2 0 6 0;
#X connect 2 1 5 0;
#X connect 3 0 4 0;
#X connect 3 0 7 0;
#X connect 3 0 10 0;
#X connect 4 0 3 1;
#X connect 5 0 3 1;
#X connect 6 0 3 0;
#X connect 7 0 6 1;
#X connect 8 0 11 0;
#X connect 9 0 11 0;
#X connect 10 0 0 0;
#X connect 10 1 11 1;
#X connect 12 0 14 0;
#X connect 12 0 16 0;
#X connect 14 0 13 0;
#X connect 16 0 15 0;
#X restore 266 351 pd make-table;
#X text 257 327 here's the patch I used to make the table:;
#X obj 53 157 osc~ 440;
#X text 589 176 0;
#X text 590 77 10;
#X text 406 186 ------ 123 samples ------;
#X text 117 306 <-- attack;
#X text 116 362 <-- release;
#X msg 31 347 \; pd dsp 1 \; trigger 0;
#X obj 32 182 *~;
#X msg 30 292 \; pd dsp 1 \; trigger 1;
#X obj 32 106 adsr 100 100 200 70 300;
#X text 28 409 The table is indexed from 1 to 120 so that 1 gives a
true zero out and 120 gives 10 (a 20 dB boost.) The extra 20 dB are
for headroom.;
#X text 25 459 (There's also a "real" dbtorms~ object... but it's almost
certainly much more compute-intensive than tabread4~ \, since it has
to call a library "exp" function.);
#X text 26 518 Notice how the attack sounds different when you retrigger
than when you start from zero. This is because if you go from the steady
state you only rise 30 dB instead of 100 \, so it sounds slower...
a slur effect. If you don't want this \, you might try increasing the
amplitude of retriggered notes in comparison to isolated ones.;
#X text 34 28 For more natural sounding amplitude control \, you can
use the ADSR's output as log amplitude. In practice this is best done
using a lookup table:;
#X obj 31 211 output~;
#X text 406 631 updated for Pd version 0.37;
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#X connect 13 0 20 1;
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