/usr/share/puredata/doc/5.reference/tabosc4~-help.pd is in puredata-core 0.48.1-3.
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 floatatom 66 450 0 0 0 0 - - -;
#N canvas 159 26 495 270 output 0;
#X obj 414 196 t b;
#X obj 414 134 f;
#X obj 414 73 inlet;
#X text 421 36 mute;
#X obj 414 227 f;
#X msg 521 218 0;
#X msg 414 104 bang;
#X obj 414 166 moses 1;
#X obj 521 187 t b f;
#X obj 486 143 moses 1;
#X obj 102 181 dbtorms;
#X obj 486 113 r master-lvl;
#X obj 102 52 r master-lvl;
#X obj 414 257 s master-lvl;
#X obj 26 222 inlet~;
#X obj 244 50 inlet;
#X text 244 22 level;
#X obj 244 122 s master-lvl;
#X msg 118 80 set \$1;
#X obj 118 109 outlet;
#X msg 262 78 \; pd dsp 1;
#X obj 102 238 line~;
#X obj 26 259 *~;
#X obj 26 295 dac~;
#X obj 102 210 pack 0 50;
#X text 24 195 audio;
#X text 114 135 show level;
#X connect 0 0 4 0;
#X connect 1 0 7 0;
#X connect 2 0 6 0;
#X connect 4 0 13 0;
#X connect 5 0 13 0;
#X connect 6 0 1 0;
#X connect 7 0 0 0;
#X connect 7 1 8 0;
#X connect 8 0 5 0;
#X connect 9 1 4 1;
#X connect 10 0 24 0;
#X connect 11 0 1 1;
#X connect 11 0 9 0;
#X connect 12 0 10 0;
#X connect 12 0 18 0;
#X connect 14 0 22 0;
#X connect 15 0 17 0;
#X connect 15 0 20 0;
#X connect 18 0 19 0;
#X connect 21 0 22 1;
#X connect 22 0 23 0;
#X connect 22 0 23 1;
#X connect 24 0 21 0;
#X restore 32 476 pd output;
#X msg 102 450 MUTE;
#X text 148 449 <--- volume in dB;
#X floatatom 32 296 4 0 0 0 - - -;
#X obj 32 326 sig~ 100;
#X obj 547 52 table table1;
#X obj 547 80 table table2;
#X msg 372 287 \; table1 sinesum 512 0.5 0.5 0.5 0.5 \; table2 cosinesum
512 0 1;
#X text 433 474 Updated for Pd version 0.33;
#X obj 20 11 tabosc4~;
#X text 110 12 4-point interpolating oscillator;
#X msg 52 372 set table1;
#X obj 32 413 tabosc4~ table1;
#X msg 156 372 set table2;
#X text 372 343 click above \, start DSP \, and turn output;
#X text 372 361 volume up to hear this;
#X text 14 178 For good results use 512 points for up to about 15 partials
\, or 32*npartials (rounded up to a power of 2) for more than 15;
#X floatatom 275 391 4 0 0 0 - - -;
#X text 12 233 Don't send new "sinesum" messages to tables while you're
running -- instead \, use "set" messages to switch between tables.
;
#X text 80 298 signal input for frequency (Hz.);
#X text 46 349 message to switch tables;
#X text 325 391 inlet to reset phase;
#X text 166 414 creation argument initializes table;
#X text 14 40 tabosc4~ is a traditional computer music style wavetable
lookup oscillator using 4-point polynomial interpolation. The table
should have a power of two points plus three "guard points" \, one
at the beginning and two at the end \, which should be wraparound copies
of the last point and the first two points \, respectively. The "sinesum"
and "cosinesum" methods for arrays do this automatically for you if
you just want to specify partial strengths.;
#X connect 0 0 1 1;
#X connect 1 0 0 0;
#X connect 2 0 1 2;
#X connect 4 0 5 0;
#X connect 5 0 13 0;
#X connect 12 0 13 0;
#X connect 13 0 1 0;
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#X connect 18 0 13 1;
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