/usr/share/puredata/doc/3.audio.examples/shepvoice.pd is in puredata-doc 0.46.7-3.
This file is owned by root:root, with mode 0o644.
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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 | #N canvas 471 146 638 403 12;
#X obj 156 262 pack 0 50;
#X obj 98 216 pack 0 50;
#X obj 29 298 inlet~;
#X obj 98 242 line~;
#X obj 156 288 line~;
#X obj 99 306 *~;
#X obj 29 324 +~;
#X obj 29 350 outlet~;
#X obj 285 165 r pitch+;
#X obj 185 139 r interval+;
#X obj 98 164 expr $f1 * $f2 + $f3;
#X obj 481 137 r dropoff+;
#X obj 297 63 expr ($i1% 10000) * 0.0002 - 1;
#X obj 297 11 r phase;
#X obj 297 37 + \$1;
#X obj 376 165 expr exp(-$f1*$f1*$f2);
#X obj 98 190 mtof;
#X obj 98 268 osc~;
#X text 64 8 our local phase =;
#X text 61 26 overall phase + our;
#X text 60 45 relative phase;
#X text 57 64 (modulo 10000);
#X text 59 81 normalized from -1 to 1;
#X text 349 36 \$1: relative phase;
#X text 9 110 pitch is center pitch;
#X text 16 125 + interval*phase;
#X text 373 194 amplitude is Gaussian \, with;
#X text 321 215 peak width controlled by "dropoff";
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