/usr/share/puredata/doc/3.audio.examples/D07.additive.pd is in puredata-doc 0.45.4-1.
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#X obj 37 449 catch~ sum;
#X obj 349 274 s frequency;
#X obj 463 274 s duration;
#X floatatom 463 224 0 0 0 0 - - -;
#X obj 463 249 * 100;
#X obj 349 249 mtof;
#X floatatom 349 224 0 0 0 0 - - -;
#X text 82 7 ADDITIVE SYNTHESIS;
#X text 501 214 duration in tenths;
#X text 503 230 of a second;
#X text 387 223 pitch;
#X text 433 518 updated for Pd version 0.37;
#X obj 37 488 output~;
#X text 26 83 Partial takes as arguments an amplitude \, a relative
frequency \, a detuning frequency \, and a relative duration. You set
absolute duration and pitch using the controls below. Hit the trigger
to make sound.;
#X obj 36 164 partial 1 1 0.56 0;
#X text 27 31 This patch demonstrates using an abstraction \, "partial"
\, to make a simple additive synthesis instrument originally from Jean-Claude
Risset.;
#X obj 349 169 loadbang;
#X msg 349 192 72;
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#X obj 352 322 bng 25 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
-1;
#X text 385 324 <-- click to play a note;
#X obj 352 358 s trigger;
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