/usr/lib/pd/extra/ggee/hlshelf-help.pd is in pd-ggee 0.26-3.
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 | #N canvas 317 111 789 401 10;
#X text 7 351 (C) Guenter Geiger 2000;
#X text 211 298 Attention \, only the left inlet triggers new coefficients
for biquad~;
#X text 208 248 The hlshelf object creates filter coefficients for
the biquad~ filter. The three shelfs of the filter are controlled through
the gains \, the boundaries of the areas through f-low and f-high;
#X text 37 12 high-low shelf coefficients for biquad~;
#X text 31 26 ========================================;
#X floatatom 488 101 0 0 0 0 - - -;
#X floatatom 349 101 0 0 0 0 - - -;
#X obj 349 123 trigger bang float;
#X obj 45 223 biquad~;
#X obj 45 163 noise~;
#X obj 491 81 hsl 128 17 20 20000 1 1 empty empty frequency-low 5 9
0 10 -203904 -1 -1 4400 0;
#X obj 352 81 hsl 128 17 0 100 0 1 empty empty gain2 5 9 0 10 -204786
-1 -1 9100 0;
#X obj 36 283 dac~;
#X obj 45 251 *~ 0.1;
#X obj 129 192 hlshelf 30 50 70 500 5000;
#X obj 488 123 trigger bang float;
#X floatatom 628 101 0 0 0 0 - - -;
#X obj 631 81 hsl 128 17 20 20000 1 1 empty empty frequency-high 5
9 0 10 -204800 -1 -1 8800 0;
#X obj 628 123 trigger bang float;
#X floatatom 209 101 0 0 0 0 - - -;
#X obj 209 123 trigger bang float;
#X obj 212 81 hsl 128 17 0 100 0 1 empty empty gain1 5 9 0 10 -204786
-1 -1 9200 0;
#X floatatom 69 100 0 0 0 0 - - -;
#X obj 72 80 hsl 128 17 0 100 0 1 empty empty gain0 5 9 0 10 -204786
-1 -1 2300 0;
#X obj 129 140 bang;
#X connect 5 0 15 0;
#X connect 6 0 7 0;
#X connect 7 0 24 0;
#X connect 7 1 14 2;
#X connect 8 0 13 0;
#X connect 9 0 8 0;
#X connect 10 0 5 0;
#X connect 11 0 6 0;
#X connect 13 0 12 0;
#X connect 13 0 12 1;
#X connect 14 0 8 0;
#X connect 15 0 24 0;
#X connect 15 1 14 3;
#X connect 16 0 18 0;
#X connect 17 0 16 0;
#X connect 18 0 24 0;
#X connect 18 1 14 4;
#X connect 19 0 20 0;
#X connect 20 0 24 0;
#X connect 20 1 14 1;
#X connect 21 0 19 0;
#X connect 22 0 14 0;
#X connect 23 0 22 0;
#X connect 24 0 14 0;
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