imported version 0.37-0

svn path=/trunk/; revision=1016

1 files changed, 133 insertions, 0 deletions

diff --git a/pd/doc/3.audio.examples/F04.waveshaping.pulse.pd b/pd/doc/3.audio.examples/F04.waveshaping.pulse.pd
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+#X obj 220 171 line~;
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+#X obj 70 108 *~;
+#X obj 220 72 / 10;
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+#X text 215 28 bandwidth;
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+#X text 111 141 X^2;
+#X text 84 171 1+X^2;
+#X text 71 196 1/(1+X^2);
+#X text 28 4 ANOTHER PULSE WIDTH MOD ALGORITHM;
+#N canvas 0 0 450 300 graph1 0;
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+#X text 646 461 ---- 0.02 seconds ----;
+#X text 614 237 2;
+#X text 645 237 4;
+#X text 584 237 0;
+#X text 622 252 -- partial number --;
+#X text 677 237 6;
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+#X text 93 93 Fourier series;
+#X text 98 146 magnitude;
+#X text 96 131 calculate;
+#X text 21 3 This subpatch computes the spectrum of the incoming signal
+with a (rectangular windowed) FFT. FFTs aren't properly introduced
+until much later.;
+#X text 83 61 signal to analyze;
+#X text 193 164 delay two samples;
+#X text 191 182 for better graphing;
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+#X msg 224 321 \; pd dsp 1;
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+#X text 174 247 <-- repeatedly;
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+#X text 632 540 updated for Pd version 0.37;
+#X text 23 515 NOTE: The PAF algorithm is protected by patents belonging
+to IRCAM. Noncommercial use seems to be fine with them but contact
+them first if you want to sell something using this.;
+#X text 24 473 This is the form of pulse train used in the original
+Phase Aligned Formant (PAF) algorithm.;
+#X text 23 342 Here we use waveshaping to make another form of pulse
+train. This one has a neat spectrum: the partials drop off exponentially
+(with the "bandwidth" controlling the rate of dropoff.) In later patches
+we'll use a wavetable to do the waveshaping but for simplicity \, it's
+done algebraically here. The oscillator runs at half the fundamental
+frequency. The symmetry of the waveshaping doubles the frequency of
+the output.;
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