1 files changed, 161 insertions, 0 deletions
diff --git a/pd/doc/3.audio.examples/H02.packets.pd b/pd/doc/3.audio.examples/H02.packets.pd
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+#N canvas 83 221 878 705 12;
+#X obj 315 424 line~;
+#X obj 47 517 cos~;
+#X graph graph1 0 -2 882 2 644 469 844 339;
+#X array pulse-output 882 float 0;
+#X pop;
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+#X obj 338 60 inlet;
+#X text 344 29 mute;
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+#X obj 338 135 moses 1;
+#X obj 398 111 moses 1;
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+#X obj 199 41 inlet;
+#X text 199 18 level;
+#X obj 199 100 s master-lvl;
+#X msg 96 65 set \$1;
+#X obj 96 89 outlet;
+#X msg 214 64 \; pd dsp 1;
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+#X obj 83 171 pack 0 50;
+#X text 15 125 audio;
+#X text 93 110 show level;
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+#X text 315 306 bandwidth;
+#X msg 165 602 bang;
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+#X text 644 472 --- 0.02 seconds ---;
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+#X obj 484 401 tabwrite~ carrier;
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+#X text 211 601 <-- graph;
+#X floatatom 47 381 4 0 0;
+#X obj 47 405 phasor~ 100;
+#X text 31 2 WINDOWED PACKETS;
+#X text 169 632 <-- output;
+#X text 43 356 freq.;
+#X text 43 337 fundamental;
+#X text 28 51 The simpler technique is to synthesize enveloped sinusoidal
+wave packets. The packets should repeat at the fundamental frequency
+\, but the frequency of the packet itself controls the center frequency
+of the formant. The length of the packet varies inversely with bandwidth.
+;
+#X text 27 132 In the patch below \, the "clip~" followed by "cos~"
+and "+~ 1" is the enveloping ("windowing" function \, which appears
+in the top graph. This is just the original PWM patch from part 2 The
+carrier \, on the other hand \, is a broken sinusoid made by amplifying
+the phasor~ (the "*~" controlled by "center freq.") and taking the
+cos~ of the result. The "breaks" in the sinusoid only occur when the
+enveloping signal is zero.;
+#X text 197 256 center;
+#X text 195 275 freq. (in;
+#X text 194 294 tenths of;
+#X text 193 314 fundamental);
+#X text 92 535 window;
+#X text 233 487 magnified phase;
+#X text 278 531 desired center frequency;
+#X text 250 514 <--this cosine goes at the;
+#X text 279 550 but its phase is reset each;
+#X text 277 569 fundamental period.;
+#X text 612 666 updated for Pd version 0.34;
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