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diff --git a/desiredata/doc/3.audio.examples/H06.envelope.follower.pd b/desiredata/doc/3.audio.examples/H06.envelope.follower.pd
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--- a/desiredata/doc/3.audio.examples/H06.envelope.follower.pd
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@@ -1,86 +0,0 @@
-#N canvas 87 74 585 621 12;
-#X floatatom 354 464 4 0 0 0 - - -;
-#X floatatom 150 316 3 0 999 0 - #0-osc2 -;
-#X obj 150 336 osc~;
-#X text 162 12 ENVELOPE FOLLOWER;
-#X text 22 33 An envelope follower measures the mean square power of
-an signal as it changes over time. (You can convert mean square power
-to RMS ampitude or to decibels if you wish.) The term "mean square"
-means simply that the signal should be squared \, and then averaged.
-The averageing is done using a low-pass filter such as lop~.;
-#X obj 62 466 lop~;
-#X floatatom 93 444 3 0 100 0 - #0-lop -;
-#X obj 61 356 +~;
-#X text 187 317 <-- frequency of second oscillator;
-#X obj 62 330 osc~ 500;
-#X obj 62 413 *~;
-#X obj 62 522 snapshot~;
-#X floatatom 62 573 5 0 999 0 - - -;
-#X obj 62 545 sqrt;
-#X text 335 361 built-in envelope;
-#X obj 354 491 dbtorms;
-#X floatatom 354 518 5 0 999 0 - - -;
-#N canvas 536 459 382 265 startup 0;
-#X obj 22 24 loadbang;
-#X obj 22 48 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
--1;
-#X obj 22 67 f \$0;
-#X text 35 195 This subpatch loads initial;
-#X text 31 219 values in number boxes.;
-#X msg 22 91 \; \$1-osc2 400 \; \$1-lop 10 \; \$1-metro 1 \; pd dsp
-1;
-#X obj 223 132 metro 250;
-#X obj 223 107 r \$0-metro;
-#X obj 223 156 s \$0-tick;
-#X connect 0 0 1 0;
-#X connect 1 0 2 0;
-#X connect 2 0 5 0;
-#X connect 6 0 8 0;
-#X connect 7 0 6 0;
-#X restore 217 598 pd startup;
-#X text 115 414 square the signal;
-#X text 124 440 <-- responsiveness;
-#X text 159 501 take snapshot;
-#X text 108 548 convert to RMS;
-#X text 327 599 updated for Pd version 0.39;
-#X text 334 381 follower for comparison;
-#X text 107 466 low-pass filter;
-#X text 114 573 output;
-#X obj 70 497 r \$0-tick;
-#X text 159 517 every 1/4 second;
-#X obj 389 439 r \$0-tick;
-#X obj 354 439 f;
-#X obj 376 414 env~;
-#X text 20 242 The env~ object at right \, which is a built-in envelope
-follower using a higher-quality low-pass filter than lop~ \, is shown
-for comparison. Its output is artificially slowed down to match the
-homemade one at left.;
-#X obj 150 359 *~;
-#X obj 185 360 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
-1;
-#X text 204 358 <-- on/off;
-#X text 20 128 Here we're adding two oscillators so the result should
-be an RMS of one if the second oscillator is on \, 0.707 otherwise.
-Note two effects: first \, the more responsive the envelope follower
-\, the less accurate the result (but the faster it responds). Second
-\, if the two oscillators are tuned close to each other their beating
-affects the nombers coming out.;
-#X connect 0 0 15 0;
-#X connect 1 0 2 0;
-#X connect 2 0 32 0;
-#X connect 5 0 11 0;
-#X connect 6 0 5 1;
-#X connect 7 0 10 0;
-#X connect 7 0 10 1;
-#X connect 7 0 30 0;
-#X connect 9 0 7 0;
-#X connect 10 0 5 0;
-#X connect 11 0 13 0;
-#X connect 13 0 12 0;
-#X connect 15 0 16 0;
-#X connect 26 0 11 0;
-#X connect 28 0 29 0;
-#X connect 29 0 0 0;
-#X connect 30 0 29 1;
-#X connect 32 0 7 1;
-#X connect 33 0 32 1;