/usr/lib/pd/extra/fftease/leaker~-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 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 | #N canvas 718 386 500 440 10;
#N canvas 0 22 462 312 leaker-block 0;
#X obj 194 143 outlet~;
#X obj 198 186 block~ 256;
#X obj 194 112 leaker~ 4 1;
#X obj 165 52 inlet~;
#X obj 212 52 inlet~;
#X obj 280 60 inlet;
#X obj 329 97 inlet;
#X connect 2 0 0 0;
#X connect 3 0 2 0;
#X connect 4 0 2 1;
#X connect 5 0 2 2;
#X connect 6 0 2 0;
#X restore 96 168 pd leaker-block;
#X msg 255 182 \; pd dsp \$1;
#X obj 255 159 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
1;
#X obj 96 221 dac~;
#X floatatom 162 113 5 0 1 0 - xfade -;
#X obj 100 254 hsl 128 15 0 1 0 0 xfade empty xfade -2 -6 0 8 -260372
-1 -1 10400 1;
#N canvas 0 22 466 316 messages 1;
#X msg 40 116 upsieve;
#X msg 52 138 downsieve;
#X msg 69 163 randsieve;
#X obj 40 262 outlet;
#X obj 105 220 fftease-system;
#X text 43 90 select sieve characteristic:;
#X connect 0 0 3 0;
#X connect 1 0 3 0;
#X connect 2 0 3 0;
#X connect 4 0 3 0;
#X restore 196 141 pd messages;
#X text 237 254 <- spectral crossfade here;
#X obj 16 215 loadbang;
#X msg 16 238 0.5;
#N canvas 990 218 520 409 playsound1 0;
#X obj 31 194 soundfiler;
#X obj 31 160 openpanel;
#N canvas 0 22 450 300 graph1 0;
#X array leaker-sound1 4e+06 float 2;
#X coords 0 1 4e+06 -1 200 140 1;
#X restore 237 13 graph;
#X msg 31 131 bang;
#X obj 227 284 outlet~;
#X msg 227 244 bang;
#X obj 348 228 spigot;
#X obj 385 205 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1
1;
#X text 63 132 open the sound;
#X text 133 244 then play it;
#X text 304 190 loop if you like;
#X msg 31 177 read -resize \$1 leaker-sound1;
#X obj 227 268 tabplay~ leaker-sound1;
#X connect 1 0 11 0;
#X connect 3 0 1 0;
#X connect 5 0 12 0;
#X connect 6 0 5 0;
#X connect 7 0 6 1;
#X connect 11 0 0 0;
#X connect 12 0 4 0;
#X connect 12 1 6 0;
#X restore 96 37 pd playsound1;
#N canvas 990 218 516 405 playsound2 0;
#X obj 31 194 soundfiler;
#X obj 31 160 openpanel;
#X msg 31 131 bang;
#X obj 227 284 outlet~;
#X msg 227 244 bang;
#X obj 348 228 spigot;
#X obj 385 205 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 1
1;
#X text 63 132 open the sound;
#X text 133 244 then play it;
#X text 304 190 loop if you like;
#N canvas 0 22 450 300 graph2 0;
#X array leaker-sound2 2.499e+06 float 2;
#X coords 0 1 2.499e+06 -1 200 140 1;
#X restore 216 15 graph;
#X msg 31 177 read -resize \$1 leaker-sound2;
#X obj 227 268 tabplay~ leaker-sound2;
#X connect 1 0 11 0;
#X connect 2 0 1 0;
#X connect 4 0 12 0;
#X connect 5 0 4 0;
#X connect 6 0 5 1;
#X connect 11 0 0 0;
#X connect 12 0 3 0;
#X connect 12 1 5 0;
#X restore 129 55 pd playsound2;
#X text 38 317 leaker~ combines two input sounds \, with the spectral
contribution of each sound determined by an internally maintained sieve
and a threshold selection value. At value 0 \, only sound 1 is heard
and at value 1 \, only sound 2 is heard. At intermediate values \,
parts of each spectrum are aggregated according to the sieve structure
which may be specified as upsieve \, downsieve or randsieve.;
#X connect 0 0 3 0;
#X connect 0 0 3 1;
#X connect 2 0 1 0;
#X connect 4 0 0 2;
#X connect 6 0 0 3;
#X connect 8 0 9 0;
#X connect 9 0 5 0;
#X connect 10 0 0 0;
#X connect 11 0 0 1;
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