From 8dbec761cf858ea65900c8a094599857208d8c3a Mon Sep 17 00:00:00 2001 From: "N.N." Date: Tue, 5 Jan 2010 22:49:36 +0000 Subject: svn path=/trunk/; revision=12907 --- desiredata/doc/3.audio.examples/J06.enveloping.pd | 97 ----------------------- 1 file changed, 97 deletions(-) delete mode 100644 desiredata/doc/3.audio.examples/J06.enveloping.pd (limited to 'desiredata/doc/3.audio.examples/J06.enveloping.pd') diff --git a/desiredata/doc/3.audio.examples/J06.enveloping.pd b/desiredata/doc/3.audio.examples/J06.enveloping.pd deleted file mode 100644 index 52bae857..00000000 --- a/desiredata/doc/3.audio.examples/J06.enveloping.pd +++ /dev/null @@ -1,97 +0,0 @@ -#N canvas 4 -26 874 736 12; -#N canvas 0 0 450 300 graph1 0; -#X array \$0-waveform 882 float 0; -#X coords 0 1.02 881 -1.02 200 130 1; -#X restore 639 379 graph; -#X floatatom 47 25 0 0 20 0 - - -; -#N canvas 0 0 450 300 graph1 0; -#X array \$0-env 22050 float 0; -#X coords 0 1.02 22049 -1.02 200 130 1; -#X restore 638 189 graph; -#X obj 47 52 phasor~; -#X text 126 2 ENVELOPE GENERATORS FROM LINE SEGMENTS; -#X obj 19 514 output~; -#X text 610 698 updated for Pd version 0.39; -#X obj 46 98 *~; -#X obj 11 165 -~; -#X obj 10 214 *~; -#X floatatom 68 75 3 0 100 0 - - -; -#X obj 16 244 min~; -#X floatatom 68 123 3 0 100 0 - - -; -#X obj 68 146 / 100; -#X floatatom 68 172 3 0 100 0 - - -; -#X obj 60 386 *~ 2; -#X obj 60 409 min~; -#X obj 110 386 -~ 1; -#X obj 60 358 phasor~ 200; -#X obj 18 477 *~; -#X obj 27 326 tabwrite~ \$0-env; -#X obj 38 306 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X obj 68 195 * -1; -#X obj 69 457 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1 --1; -#X obj 61 478 tabwrite~ \$0-waveform; -#X obj 111 409 *~ -3; -#X obj 60 432 -~ 0.5; -#X text 639 514 ----- 0.02 second ----; -#X text 86 24 <-- frequency (Hz.); -#X text 636 322 ----- 0.5 second ------; -#X text 107 72 <-- slope of rise segment. Just multiply this by the -phase to make the segment.; -#X text 129 140 Subtract this to make the phasor cross zero at the -desired point of the cycle.; -#X text 107 173 <-- slope of decay segment.; -#X text 112 190 multiply the phasor (with the zero crossing shifted -as above) by the desired slope \, negating it so the segment points -downward.; -#X text 63 244 minimum of rise and decay segments (makes a triangle -wave); -#X obj 17 267 clip~ 0 1; -#X text 109 266 clip the triangle wave to between 0 and 1 \, to make -the sustain and silent regions.; -#X text 108 121 <-- Duty cycle (end of decay segment as % of cycle.) -; -#X text 60 304 <-- click to graph envelope shape; -#X text 91 456 <-- click to graph audio waveform; -#X text 172 364 this makes a quick-and-dirty triangle wave; -#X text 172 382 as described in the previous patch. It's; -#X text 172 419 to listen to.; -#X text 97 511 You can make a phasor-generated envelope generator using -"min" and "clip" to combine line segments. Here a rise segment starts -at phase 0 \, and a decay segment passes through zero at a controllable -point (the "duty cycle" \, as a percentage of a cycle.) Each has a -controllable slope (in units per cycle). The resulting triangle wave -(the minimum of the rise and decay segments) is limited to 1 \, thus -making a flat "sustain" segment (unless the rise and decay segments -meet at a value less than one \, in which case there is none). Limiting -below by 0 prevents us from following the decay segment into negative -values. Reasonable values to start with are 6 Hz. frequency \, rise -and decay slope 10 \, duty cycle 75%.; -#X text 173 401 used here so we'll have something; -#X connect 1 0 3 0; -#X connect 3 0 7 0; -#X connect 3 0 8 0; -#X connect 7 0 11 1; -#X connect 8 0 9 0; -#X connect 9 0 11 0; -#X connect 10 0 7 1; -#X connect 11 0 35 0; -#X connect 12 0 13 0; -#X connect 13 0 8 1; -#X connect 14 0 22 0; -#X connect 15 0 16 0; -#X connect 16 0 26 0; -#X connect 17 0 25 0; -#X connect 18 0 15 0; -#X connect 18 0 17 0; -#X connect 19 0 5 0; -#X connect 19 0 5 1; -#X connect 21 0 20 0; -#X connect 22 0 9 1; -#X connect 23 0 24 0; -#X connect 25 0 16 1; -#X connect 26 0 24 0; -#X connect 26 0 19 1; -#X connect 35 0 19 0; -#X connect 35 0 20 0; -- cgit v1.2.1