/usr/lib/pd/extra/fftease/pvoc~-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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 | #N canvas -2 462 686 439 10;
#N canvas 0 22 502 352 pvocblock 0;
#X obj 27 158 outlet~;
#X obj 27 42 inlet~;
#X obj 80 13 inlet;
#X obj 134 46 inlet;
#X obj 213 69 inlet;
#X text 145 87 args: lo-freq \, hi-freq \, overlap \, window-factor
;
#X obj 27 85 pvoc~ 0 8000 4 4;
#X obj 27 182 block~ 256;
#X connect 1 0 6 0;
#X connect 2 0 6 1;
#X connect 3 0 6 2;
#X connect 4 0 6 0;
#X connect 6 0 0 0;
#X restore 203 144 pd pvocblock;
#X obj 203 203 dac~;
#X floatatom 229 68 5 0.1 3 2 transpose transpose -;
#X floatatom 255 99 5 0 0 2 thresh thresh -;
#X msg 44 193 \; pd dsp \$1;
#X obj 44 174 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
;
#X obj 80 285 hsl 128 15 0.1 4 0 0 empty empty empty -2 -6 0 8 -261285
-1 -1 1931 1;
#N canvas 242 216 504 402 messages 1;
#X obj 70 293 outlet;
#X floatatom 70 82 5 0 0 0 - - -;
#X msg 70 112 highfreq \$1;
#X floatatom 182 175 5 0 0 0 - - -;
#X msg 182 204 lowfreq \$1;
#X msg 70 53 8000;
#X obj 70 27 loadbang;
#X msg 182 154 0;
#X obj 182 132 loadbang;
#X obj 212 267 fftease-system;
#X obj 161 48 hsl 128 15 500 8000 0 0 empty empty empty -2 -6 0 8 -68760
-1 -1 6900 1;
#X obj 256 148 hsl 128 15 0 1000 0 0 empty empty empty -2 -6 0 8 -68760
-1 -1 0 1;
#X text 149 22 maximum frequency to synthesize;
#X text 252 124 minimum;
#X connect 1 0 2 0;
#X connect 2 0 0 0;
#X connect 3 0 4 0;
#X connect 4 0 0 0;
#X connect 5 0 1 0;
#X connect 6 0 5 0;
#X connect 7 0 3 0;
#X connect 8 0 7 0;
#X connect 9 0 0 0;
#X connect 10 0 1 0;
#X connect 11 0 3 0;
#X restore 282 116 pd messages;
#X obj 222 285 hsl 128 15 0 0.05 0 0 empty empty empty -2 -6 0 8 -227712
-1 -1 300 1;
#X obj 219 311 s thresh;
#X obj 77 311 s transpose;
#X obj 77 233 loadbang;
#X msg 77 264 1;
#X obj 311 144 hsl 128 15 0 1 0 0 empty empty empty -2 -6 0 8 -43049
-1 -1 5400 1;
#X obj 203 170 *~ 0.01;
#X text 444 143 gain;
#N canvas 639 439 639 490 sndfile 0;
#X text 13 300 try a vocal sound or other sound with strong formant
structure;
#X obj 31 194 soundfiler;
#X obj 31 160 openpanel;
#N canvas 0 22 450 300 graph1 0;
#X array pvoc-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 obj 227 268 tabplay~ pvoc-sound1;
#X msg 31 177 read -resize \$1 pvoc-sound1;
#X connect 2 0 13 0;
#X connect 4 0 2 0;
#X connect 6 0 12 0;
#X connect 7 0 6 0;
#X connect 8 0 7 1;
#X connect 12 0 5 0;
#X connect 12 1 7 0;
#X connect 13 0 1 0;
#X restore 203 31 pd sndfile;
#X msg 219 249 0.001;
#X text 286 27 <- load a soundfile here;
#X text 75 345 pvoc~ allows you to change the pitch of the input sound
without changing its speed. Optional arguments: low frequency to synthesize
\, high frequency to synthesize. These parameters \, together with
the pvoc~ block size will determine CPU load.;
#X connect 0 0 14 0;
#X connect 2 0 0 1;
#X connect 3 0 0 2;
#X connect 5 0 4 0;
#X connect 6 0 10 0;
#X connect 7 0 0 3;
#X connect 8 0 9 0;
#X connect 11 0 12 0;
#X connect 11 0 17 0;
#X connect 12 0 6 0;
#X connect 13 0 14 1;
#X connect 14 0 1 0;
#X connect 14 0 1 1;
#X connect 16 0 0 0;
#X connect 17 0 8 0;
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