From 57045df5fe3ec557e57dc7434ac1a07b5521bffc Mon Sep 17 00:00:00 2001
From: Guenter  Geiger <ggeiger@users.sourceforge.net>
Date: Mon, 29 Jul 2002 17:06:19 +0000
Subject: This commit was generated by cvs2svn to compensate for changes in
 r58, which included commits to RCS files with non-trunk default branches.

svn path=/trunk/; revision=59
---
 pd/doc/7.stuff/tools/latency.pd | 97 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 pd/doc/7.stuff/tools/latency.pd

(limited to 'pd/doc/7.stuff/tools/latency.pd')

diff --git a/pd/doc/7.stuff/tools/latency.pd b/pd/doc/7.stuff/tools/latency.pd
new file mode 100644
index 00000000..ce6db34d
--- /dev/null
+++ b/pd/doc/7.stuff/tools/latency.pd
@@ -0,0 +1,97 @@
+#N canvas 37 -7 825 630 12;
+#X obj 98 184 metro 500;
+#X obj 60 296 sig~;
+#X msg 60 267 0.5;
+#X obj 96 245 del 3;
+#X msg 96 270 0;
+#X obj 33 325 dac~;
+#X obj 286 216 adc~;
+#X obj 290 312 timer;
+#X obj 92 335 env~ 65536;
+#X floatatom 92 362 4 0 0;
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+#X obj 339 193 + 100;
+#X obj 339 218 dbtorms;
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+#X obj 312 245 *~ 1;
+#X obj 312 282 threshold~ 0.1 5 0.05 5;
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+-1;
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+1;
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+0;
+#X msg 17 138 \; pd dsp 1;
+#X obj 634 132 *~;
+#X obj 16 113 sel 0;
+#X text 100 20 off;
+#X obj 96 156 == 1;
+#X obj 80 78 t f;
+#X text 102 36 measure latency;
+#X text 100 53 test continuity;
+#X obj 582 97 == 2;
+#X text 89 381 level out;
+#X text 181 382 level in;
+#X obj 530 244 dac~;
+#X text 291 370 latency in;
+#X text 292 386 msec;
+#X text 656 188 this flashes when;
+#X text 656 207 a discontinuity is;
+#X text 657 226 detected;
+#X obj 642 105 adc~;
+#X text 328 131 you can;
+#X text 324 147 adjust gain here;
+#X text 538 66 --- continuity check ---;
+#X text 169 105 --- latency measurement ---;
+#X text 63 410 To use this patch \, connect your audio output back
+to the audio input (channel 1 should suffice.) The latency measurement
+assumes the feedback gain is at least about -14 dB - you can increase
+the input sensitivity if need be.;
+#X text 66 481 If you select "measure latency" a series of pulses are
+timed using the "threshold~" object - note that it has an uncertainty
+of 1.45 msec (at 44K1) \, so you might see the number jitter even if
+the latency is constant.;
+#X text 66 554 Select "test continuity' to see if there are interruptions
+in the sound \, either at the input or output stage. If there are \,
+the button will flash.;
+#X connect 0 0 2 0;
+#X connect 0 0 3 0;
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-- 
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