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diff --git a/earplug~-help.pd b/earplug~-help.pd
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+#N canvas 451 156 828 741 10;
+#X msg 531 179 \; pd dsp 1;
+#X msg 149 561 0 \, 360 5000;
+#X obj 152 472 earplug~ 270 -25;
+#X floatatom 306 357 5 0 0 0 - - -;
+#N canvas 0 22 385 256 (subpatch) 0;
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+#X obj 260 129 cputime;
+#X obj 260 33 loadbang;
+#X obj 260 80 metro 1000;
+#X msg 260 61 1;
+#X obj 260 108 t b b;
+#X obj 260 170 * 0.1;
+#X obj 260 150 int;
+#X text 331 203 comment;
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+#X coords 0 1 100 -1 120 20 1;
+#X restore 531 31 graph;
+#X msg 610 179 \; pd dsp 0;
+#X text 24 18 earplug~ - convolution binaural filter;
+#X text 23 59 This filter utilizes HRTF measurements (compact set)
+of KEMAR Dummy-Head Microphone (http://sound.media.mit.edu/KEMAR.html)
+;
+#X obj 531 146 soundfiler;
+#N canvas 0 22 450 300 (subpatch) 0;
+#X array table 4e+06 float 0;
+#X coords 0 1 4e+06 -1 100 60 1;
+#X restore 534 250 graph;
+#X obj 152 413 tabplay~ table;
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+#X msg 151 618 0 \, 360 5000;
+#X obj 151 643 line 0 1;
+#X obj 149 586 line 0 50;
+#X text 533 215 audio on;
+#X obj 150 236 tabplay~ table;
+#X obj 150 266 dac~;
+#X text 27 99 The impulse response data "earplug_data.txt" must be
+in the same path as this external. Must use headphone to hear effective
+filter effects. Fitler could be DSP intensive due to convolution.;
+#X msg 194 211 stop;
+#X text 31 267 original --->;
+#X obj 152 499 dac~ 1 2;
+#X text 31 499 filtered --->;
+#X msg 202 381 stop;
+#X msg 152 381 bang;
+#X msg 147 211 bang;
+#X text 245 617 <---a better circle;
+#X text 244 561 <--- circle with noise;
+#X text 147 668 avoid zipper noise: uase small line grain;
+#X text 351 354 <--- azimuth: 0 - 360 (degrees);
+#X text 351 436 <--- elevation: -40 - 90 (degrees);
+#X text 145 192 start;
+#X text 150 362 start;
+#X msg 532 124 read -resize Spring.wav table;
+#X obj 532 103 openpanel;
+#X obj 532 83 bng 15 250 50 0 empty empty empty 17 7 0 10 -262144 -1
+-1;
+#X text 553 82 <- open a soundfile;
+#X obj 306 303 noise~;
+#X obj 342 331 tgl 15 0 empty empty empty 17 7 0 10 -262144 -1 -1 0
+1;
+#X text 294 281 for testing:;
+#X obj 306 331 *~ 0;
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