/usr/lib/pd/extra/fftease/drown~-help.pd is in pd-fftease 2.5.2.git20121005-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 | #N canvas 1012 277 466 316 10;
#N canvas 0 22 470 320 drown-block 0;
#X obj 178 165 drown~ 0.001 0.1 4 1;
#X obj 178 195 outlet~;
#X obj 178 124 inlet~;
#X obj 245 123 inlet;
#X obj 313 125 inlet;
#X obj 371 129 inlet;
#X obj 178 232 block~ 256;
#X connect 0 0 1 0;
#X connect 2 0 0 0;
#X connect 3 0 0 1;
#X connect 4 0 0 2;
#X connect 5 0 0 0;
#X restore 18 93 pd drown-block;
#X obj 18 140 dac~;
#X msg 24 256 \; pd dsp \$1;
#X obj 24 233 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
;
#X floatatom 49 49 5 0 0 0 - threshold -;
#X floatatom 80 65 5 0 0 0 - noise-gain -;
#N canvas 730 185 462 312 sound-source 0;
#X obj 127 102 osc~ 350;
#X obj 127 194 outlet~;
#X obj 249 107 noise~;
#X obj 127 155 *~ 0.1;
#X obj 249 143 *~ 0.03;
#X text 58 103 signal ->;
#X text 298 110 <- add noise;
#X connect 0 0 3 0;
#X connect 2 0 4 0;
#X connect 3 0 1 0;
#X connect 4 0 1 0;
#X restore 18 7 pd sound-source;
#N canvas 928 509 470 320 messages 0;
#X obj 231 210 outlet;
#N canvas 0 22 458 308 init 0;
#X obj 333 21 loadbang;
#X obj 333 71 unpack f f;
#X obj 333 103 s drown-s1;
#X obj 362 129 s drown-s2;
#X msg 333 48 0.01 1;
#X connect 0 0 4 0;
#X connect 1 0 2 0;
#X connect 1 1 3 0;
#X connect 4 0 1 0;
#X restore 89 104 pd init;
#X obj 231 180 fftease-system;
#X connect 2 0 0 0;
#X restore 163 77 pd messages;
#X obj 26 173 hsl 128 15 0 0.02 0 0 threshold drown-s1 threshold -2
-6 0 8 -189148 -1 -1 6800 1;
#X obj 26 211 hsl 128 15 0 1 0 0 noise-gain drown-s2 noise-gain -2
-6 0 8 -189148 -1 -1 0 1;
#X text 160 210 <- reduce noise here;
#X text 160 172 <- threshold to block noise;
#X text 103 265 threshold-based noise reduction;
#X connect 0 0 1 0;
#X connect 0 0 1 1;
#X connect 3 0 2 0;
#X connect 4 0 0 1;
#X connect 5 0 0 2;
#X connect 6 0 0 0;
#X connect 7 0 0 3;
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