/usr/lib/pd/extra/iemlib/lp2~-help.pd is in pd-iemlib 1.20.1-1.
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 | #N canvas 285 129 395 468 10;
#X text 11 255 ~signal_in~;
#X text 36 43 dsp ON/OFF;
#X floatatom 88 171 3 15 133 0 - - -;
#X obj 88 190 mtof;
#X floatatom 88 209 9 0 22000 0 - - -;
#X text 152 210 Hz;
#X text 66 284 ~signal_out~;
#X floatatom 54 325 7 0 0 0 - - -;
#X text 105 326 dB;
#X floatatom 127 153 9 0 22000 0 - - -;
#X text 191 154 Hz;
#X floatatom 54 114 3 15 133 0 - - -;
#X floatatom 19 83 5 0 0 0 - - -;
#X text 61 83 % cpu;
#X floatatom 157 250 5 2 9999 0 - - -;
#X text 198 251 ms;
#X obj 19 63 dsp;
#X floatatom 122 232 4 0.01 1000 0 - - -;
#X text 157 232 Q;
#X text 88 354 2.arg:<float> Q [-];
#X text 88 364 3.arg:<float> interpolation_time [ms];
#X obj 19 43 tgl 15 0 empty empty empty 8 -8 0 10 -262144 -1 -1 1 1
;
#X obj 54 304 gainvu~ 300;
#X obj 236 162 vu 15 120 empty empty 8 -8 0 10 -66577 -1 1 0;
#X obj 296 173 vsl 15 128 0 127 0 1 empty empty empty 8 -8 0 10 -262144
-1 -1 8000 1;
#X obj 54 133 testtone~ 200;
#X obj 118 99 init 69;
#X text 81 115 midi;
#X obj 54 270 lp2~ 440 0.707 200;
#X text 88 344 1.arg:<float> cutoff_freq. [Hz];
#X floatatom 278 319 7 0 0 0 - - -;
#X text 329 320 dB;
#X text 45 62 performance: 0.22 % at 400 MHz-Pentium \, sr=44100;
#X obj 14 17 cnv 8 1 1 empty empty lp2~ 1 2 1 18 -262144 -1109 0;
#X text 83 6 lowpass 2.order;
#X text 106 415 IEM KUG;
#X text 83 403 musil;
#X text 120 403 @;
#X text 129 403 iem.at;
#X text 89 425 Graz \, Austria;
#X text 41 392 (c) Thomas Musil 2000 - 2010;
#X connect 2 0 3 0;
#X connect 3 0 4 0;
#X connect 4 0 28 1;
#X connect 11 0 25 0;
#X connect 14 0 28 3;
#X connect 16 0 12 0;
#X connect 17 0 28 2;
#X connect 21 0 16 0;
#X connect 22 1 30 0;
#X connect 22 2 23 0;
#X connect 23 1 7 0;
#X connect 24 0 22 1;
#X connect 25 0 28 0;
#X connect 25 1 9 0;
#X connect 26 0 11 0;
#X connect 28 0 22 0;
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