sketches of ideas for easy to play patchecs to illustrate concepts

svn path=/trunk/; revision=2904

7 files changed, 947 insertions, 0 deletions

diff --git a/doc/tutorials/playnow/additive.pd b/doc/tutorials/playnow/additive.pd
new file mode 100644
index 00000000..c326cf00
--- /dev/null
+++ b/doc/tutorials/playnow/additive.pd
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+#X text 87 15 ADDITIVE SYNTHESIS;
+#X text 32 73 This patch demonstrates using an abstraction \, "partial"
+\, to make a simple additive synthesis instrument.;
+#X text 28 114 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 hte trigger
+to make sound.;
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+#X text 10 519 (C) Copyright 2004 Hans-Christoph Steiner <hans@at.or.at>
+;
+#X text 227 533 released under the GNU GPL;
+#X text 421 520 $Revision: 1.1 $$Date: 2005-05-05 20:35:48 $;
+#X text 422 533 $Author: eighthave $;
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diff --git a/doc/tutorials/playnow/draw_sound.pd b/doc/tutorials/playnow/draw_sound.pd
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+more expensive than bp~.;
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+#X text 71 6 PORTAMENTO AND VIBRATO;
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+#X text 11 32 Portamento can be treated as a special case of an ADSR
+envelope \, with 100 percent sustain. Vibrato is properly computed
+in units of pitch \, but it's also easy to add vibrato to the envelope--before
+raising it to the fourth power \, so that it acts pseudo-logarithmically.
+Rather than add to the ADSR output \, we multiply a signal which controls
+relative frequency. The relative frequency change is one plus an oscillator.
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+#X text 237 258 vibrato output should;
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+#X text 17 539 (C) Copyright 2004 Hans-Christoph Steiner <hans@at.or.at>
+;
+#X text 236 555 released under the GNU GPL;
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+#X text 194 76 sing into the mic to control the FM synthesizer;
+#X text 17 539 (C) Copyright 2004 Hans-Christoph Steiner <hans@at.or.at>
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