Hi Miller,
feeding audio into [bob~] and then going to zero will increase the CPU load by
ca. 6%. Clearing the filter or adding a tiny amount of noise brings the CPU
load back to its usual level immediately, so I guess it's a problem with
denormals.
My Pd load meter won't really show the increase, but it's clearly visibly on
Process Explorer.
See my attached patch. Tried with Pd 0.47.1, Lenovo Thinkpad L440, Windows 7.
Christof
#N canvas 565 278 755 300 10;
#X obj 42 242 bob~;
#X obj 119 216 sig~ 1;
#X obj 54 215 sig~ 400;
#X obj 42 97 osc~ 400;
#X obj 43 152 *~;
#X obj 129 118 line~;
#X obj 129 60 dbtorms;
#X msg 129 89 \$1 50;
#X obj 129 32 nbx 5 14 0 100 0 0 empty empty empty 0 -8 0 10 -262144
-1 -1 0 256;
#X obj 36 38 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 1 1
;
#X msg 36 64 \; pd dsp \$1;
#X obj 42 179 +~;
#X obj 115 147 noise~;
#X obj 115 169 *~ 0.001;
#X obj 115 191 *~ 0;
#X obj 155 191 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
1;
#X msg 118 240 clear;
#X msg 129 5 100;
#X text 108 4 1);
#X text 165 5 2);
#X msg 193 7 0;
#X text 230 7 3) watch CPU load rise;
#X text 232 33 4) clear the filter or add some noise to kill the denormals
, f 32;
#X text 176 190 adding tiny noise;
#X text 167 241 clear the filter;
#X connect 1 0 0 2;
#X connect 2 0 0 1;
#X connect 3 0 4 0;
#X connect 4 0 11 0;
#X connect 5 0 4 1;
#X connect 6 0 7 0;
#X connect 7 0 5 0;
#X connect 8 0 6 0;
#X connect 9 0 10 0;
#X connect 11 0 0 0;
#X connect 12 0 13 0;
#X connect 13 0 14 0;
#X connect 14 0 11 1;
#X connect 15 0 14 1;
#X connect 16 0 0 0;
#X connect 17 0 8 0;
#X connect 20 0 8 0;
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