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#X text 442 513 updated for Pd version 0.37;
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#X text 171 138 Fourier series;
#X text 182 191 magnitude;
#X text 180 176 calculate;
#X text 97 28 This subpatch computes the spectrum of the incoming signal
with a (rectangular windowed) FFT. FFTs aren't properly introduced
until much later.;
#X text 161 106 signal to analyze;
#X text 271 209 delay two samples;
#X text 269 227 for better graphing;
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#X obj 133 485 loadbang;
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#X text 86 426 At load time \, calculate a good choice of fundamental
frequency for showing spectra: the 16th bin in a 4096-point spectrum
\, so SR*16/4096 or SR/256.;
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#X text 362 279 toggle to graph repeatedly;
#X text 340 257 bang to graph once;
#X obj 97 372 tabwrite~ E09-signal;
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#X msg 133 631 \; cm 6;
#X text 138 671 set carrier multiplier after fundamental;
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#X msg 287 367 \; pd dsp 1;
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#X text 420 145 ---- 0.02 seconds ----;
#X text 384 327 2;
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#X text 392 342 -- partial number --;
#X text 332 88 WAVEFORM;
#X text 448 178 SPECTRUM;
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#X text 615 194 0.5;
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#X text 224 138 index (x100);
#X text 447 327 6;
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#X text 45 17 SPECTRUM OF TWO-OPERATOR PHASE MODULATION;
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#X text 105 78 carrier harmonic #;
#X text 113 391 This patch measures the spectrum of two-operator phase
modulation. The carrier frequency is initially six times the modulation
frequency \, but you can change it with the "carrier harmonic #" control.
Changing the index changes the relative strengths of the harmonics.
Past a certain index (which depends on the carrier frequency) the lower
sidebands begin to reflect about the left edge of the spectrum \, causing
complicated interference effects., f 71;
#X text 157 240 <= graph once;
#X text 196 263 <= repeatedly;
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