#N canvas 550 527 517 215 10;
#X obj 62 132 pdp_sub;
#X obj 62 104 pdp_reg;
#X obj 62 72 pdp_trigger bang pdp;
#X obj 62 38 inlet;
#X obj 62 163 outlet;
#X text 161 17 compute the difference between current;
#X text 161 33 and previous frame;
#X connect 0 0 4 0;
#X connect 1 0 0 1;
#X connect 2 0 1 0;
#X connect 2 1 1 1;
#X connect 2 1 0 0;
#X connect 3 0 2 0;