From 4d84d14ac1aa13958eaa2971b03f7f929a519105 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?=
 <zmoelnig@users.sourceforge.net>
Date: Fri, 8 Feb 2008 13:00:32 +0000
Subject: reorganized

svn path=/trunk/; revision=9400
---
 desiredata/doc/3.audio.examples/E09.FM.spectrum.pd | 139 +++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 desiredata/doc/3.audio.examples/E09.FM.spectrum.pd

(limited to 'desiredata/doc/3.audio.examples/E09.FM.spectrum.pd')

diff --git a/desiredata/doc/3.audio.examples/E09.FM.spectrum.pd b/desiredata/doc/3.audio.examples/E09.FM.spectrum.pd
new file mode 100644
index 00000000..21094b41
--- /dev/null
+++ b/desiredata/doc/3.audio.examples/E09.FM.spectrum.pd
@@ -0,0 +1,139 @@
+#N canvas 127 136 697 536 12;
+#X obj 94 188 *~;
+#X obj 136 188 line~;
+#X obj 18 179 cos~;
+#X obj 18 154 +~;
+#X obj 136 165 pack 0 50;
+#X floatatom 136 117 0 0 0 0 - - -;
+#X obj 136 141 / 100;
+#X obj 18 129 phasor~;
+#X obj 18 284 output~;
+#X obj 17 253 hip~;
+#X text 442 513 updated for Pd version 0.37;
+#N canvas 122 211 558 609 fft 1;
+#X obj 19 61 inlet~;
+#X obj 208 212 inlet;
+#X obj 29 92 rfft~;
+#X obj 29 125 *~;
+#X obj 60 125 *~;
+#X obj 29 155 sqrt~;
+#X obj 332 109 block~ 4096 1;
+#X obj 29 181 biquad~ 0 0 0 0 1;
+#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;
+#X obj 19 459 samplerate~;
+#X obj 19 436 bng 18 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X floatatom 19 506 5 0 0 0 - - -;
+#X obj 19 482 / 256;
+#X obj 19 412 loadbang;
+#X obj 75 528 s fundamental;
+#X text 17 359 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.;
+#X obj 231 259 metro 500;
+#X obj 231 236 inlet;
+#X text 284 234 toggle to graph repeatedly;
+#X text 262 212 bang to graph once;
+#X obj 19 295 tabwrite~ E09-signal;
+#X obj 231 298 tabwrite~ E09-spectrum;
+#X obj 19 528 t b f;
+#X msg 19 551 \; cm 6;
+#X text 25 585 set carrier multiplier after fundamental;
+#X obj 29 205 /~ 4096;
+#X msg 209 322 \; pd dsp 1;
+#X connect 0 0 2 0;
+#X connect 0 0 26 0;
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+#X connect 1 0 32 0;
+#X connect 2 0 3 0;
+#X connect 2 0 3 1;
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+#X restore 62 243 pd fft;
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+#X obj 122 243 tgl 18 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
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+#X text 143 242 <-- repeatedly;
+#X text 144 222 <-- graph once;
+#N canvas 0 0 450 300 graph1 0;
+#X array E09-signal 882 float 0;
+#X coords 0 1.02 882 -1.02 200 80 1;
+#X restore 433 28 graph;
+#N canvas 0 0 450 300 graph1 0;
+#X array E09-spectrum 259 float 0;
+#X coords 0 0.51 258 -0.008 259 130 1;
+#X restore 403 175 graph;
+#X text 442 114 ---- 0.02 seconds ----;
+#X text 433 306 2;
+#X text 464 306 4;
+#X text 403 306 0;
+#X text 441 321 -- partial number --;
+#X text 497 8 WAVEFORM;
+#X text 497 157 SPECTRUM;
+#X text 663 291 0;
+#X text 664 173 0.5;
+#X obj 93 117 osc~;
+#X obj 93 86 r fundamental;
+#X text 171 117 index (x100);
+#X text 496 306 6;
+#X text 529 306 8;
+#X text 557 306 10;
+#X text 589 306 12;
+#X text 621 306 14;
+#X text 43 3 SPECTRUM OF TWO-OPERATOR PHASE MODULATION;
+#X floatatom 18 58 3 0 15 0 - - -;
+#X obj 18 105 *;
+#X obj 18 33 r cm;
+#X text 52 57 carrier harmonic #;
+#X text 71 367 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.;
+#X connect 0 0 3 1;
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-- 
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