/usr/lib/pd/extra/cyclone/vectral~-help.pd is in pd-cyclone 0.1~alpha55-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#X declare -lib cyclone;
#X text 15 35 a vector based envelope follower.;
#X msg 243 350 2;
#X obj 312 332 loadbang;
#X msg 165 341 128;
#X msg 339 369 range 0 10;
#X obj 35 305 sqrt~;
#X text 195 419 more information about the different modes may be gleaned
from the rampsmooth~ \, deltaclip~ \, and slide~ helpfiles simply think
of the changes happening between frames rather than between samples
;
#X text 298 235 - deltaclip <max> <min> \; limits the change in samples
to be in the given range;
#X floatatom 257 116 0 0 0 0 - - -;
#X floatatom 210 116 0 0 0 0 - - -;
#X obj 163 243 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144
-1 -1;
#X floatatom 257 227 0 0 0 0 - - -;
#X floatatom 210 227 0 0 0 0 - - -;
#X obj 163 260 pack deltaclip 1 -1;
#X obj 162 188 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144
-1 -1;
#X floatatom 256 172 0 0 0 0 - - -;
#X floatatom 209 172 0 0 0 0 - - -;
#X obj 162 205 pack slide 1 1;
#X text 298 179 - slide <up> <down> \; logarithmic movement to new
value;
#X obj 163 132 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144
-1 -1;
#X obj 163 149 pack rampsmooth 1 1;
#X obj 36 160 adc~;
#X obj 36 234 +~;
#X obj 69 209 *~;
#X obj 36 209 *~;
#X obj 36 184 fft~ 256 256 0;
#X text 17 60 vectral~ is useful for filtering frame based signal data
such as the output of fft~. It may operate in one of the following
modes:;
#X text 298 123 - rampsmooth <up> <down> \; linear ramp across up/down
frames to the new value;
#X text 125 282 argument is vector size(default 512). whichever mode's
message is received last is the current mode of operation;
#X obj 308 32 import cyclone;
#X obj 35 284 vectral~ 256;
#X obj 39 396 Scope~ 130 130 256 3 128 -1 1 0 0 0 0 102 255 51 135
135 135 0;
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