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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>It’s a good question, but I think the base number starts at
zero. Meaning we’re comparing NO latency with some latency. I.e. 0 -11, or 0 –
14 or 0 – 250. No delay is obviously the goal…though clearly impractical.
The question is at what point are we able to notice the latency.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I think the movie industry gives us a reasonable benchmark to
work with, in that movie frames are 30ms apart and we’re generally unable to discern
any break. There are faster systems for film that with studies are considered
“smoother” but I believe below 15ms there was little perceivable difference
(that was 72FPS if I recall)<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Time to go do some research…or not.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>Mark
Atwood</span></b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>Paragon
Consulting, Inc.</span></b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> </span><b><span
style='font-size:10.0pt;font-family:"Verdana","sans-serif"'>|</span></b><span
style='font-size:9.0pt;font-family:"Verdana","sans-serif"'> President</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.5pt;font-family:"Verdana","sans-serif"'>5885 Landerbrook Drive
Suite 130, Cleveland Ohio, 44124</span><span style='font-size:
10.5pt;font-family:"Verdana","sans-serif"'> </span><span style='font-size:
11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.5pt;font-family:"Verdana","sans-serif"'>Phone:
440.684.3101 x102 </span><b><span style='font-size:9.0pt;font-family:
"Verdana","sans-serif"'>|</span></b><span style='font-size:8.5pt;font-family:
"Verdana","sans-serif"'> Fax: 440.684.3102</span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.5pt;font-family:"Verdana","sans-serif";
color:#1351F3'><a href="mailto:mark.atwood@paragon-inc.com">mark.atwood@paragon-inc.com</a>
</span><b><span style='font-size:9.0pt;font-family:"Verdana","sans-serif"'>|</span></b><span
style='font-size:8.5pt;font-family:"Verdana","sans-serif"'> </span><span
style='font-size:8.5pt;font-family:"Verdana","sans-serif";color:#1351F3'><a
href="http://www.paragon-inc.com/">www.paragon-inc.com</a></span><span
style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p>
</div>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> nsrca-discussion-bounces@lists.nsrca.org
[mailto:nsrca-discussion-bounces@lists.nsrca.org] <b>On Behalf Of </b>Bill's
Email<br>
<b>Sent:</b> Friday, July 09, 2010 12:01 PM<br>
<b>To:</b> General pattern discussion<br>
<b>Subject:</b> Re: [NSRCA-discussion] S.bus<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>The next question then becomes, at what level can we
perceive a difference in performance? In other words, can we really perceive a
difference between 7ms and 14ms latency? I will not argue that large
differences are readily perceptible (25 versus 250), but what about smaller
differences. How large of a difference does there need to be and is there a
threshold below which it does not really matter?<br>
<br>
<br>
<br>
Phil Spelt wrote: <o:p></o:p></p>
<p class=MsoNormal>As a Psychologist, I agree with you, Bill. As an R/C
pattern jockey, I will only point out that the electronic latency is ADDED TO
the wet-ware latency...<br>
<br>
Thus, your last statement is true, indeed!<br>
<br>
At 11:19 AM 7/9/2010, you wrote:<br>
<br>
<o:p></o:p></p>
<p class=MsoNormal>I am amused by discussions about latency. We have long
discussions about the perceived advantages of single digit differences in
system latency while ignoring the fact that the average human reaction time
(call it organic latency) is around 250 milliseconds. <br>
<br>
I guess you can argue that since we are inherently so slow we need all the
electronic help we can get!! <br>
<br>
<br>
<br>
<br>
<br>
Jon Lowe wrote: <br>
<br>
<o:p></o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>There
is a great article on latency here: <br>
<br>
<a href="http://www.rcmodelreviews.com/what_is_latency.shtml">http://www.rcmodelreviews.com/what_is_latency.shtml</a><br>
<br>
A lot of people are hung up on transmitter/receiver latency numbers, and don't
see the whole picture. This gives as good a fact based write up as any
I've seen.<br>
<br>
Jon Lowe</span><o:p></o:p></p>
<p class=MsoNormal>_______________________________________________<br>
NSRCA-discussion mailing list<br>
<a href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><br>
<a href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></p>
<p><b><i>--></i></b><b><i><span style='font-family:"Arial","sans-serif";
color:maroon'> There are only two types of aircraft -- fighters and targets.<br>
<br>
</span></i></b>Phil Spelt, Past President, Knox County Radio Control Society,
Inc.<br>
URL: <a href="http://www.kcrctn.com/">http://www.kcrctn.com<br>
</a>AMA--1294, Scientific Leader Member SPA--177, Board Member<br>
My URL: <a
href="http://mywebpages.comcast.net/%7Echuenkan/">http://mywebpages.comcast.net/~chuenkan/<br>
</a> (865) 435-1476 v (865) 604-0541 c <o:p></o:p></p>
<pre><o:p> </o:p></pre><pre style='text-align:center'>
<hr size=4 width="90%" align=center>
</pre><pre><o:p> </o:p></pre><pre>_______________________________________________<o:p></o:p></pre><pre>NSRCA-discussion mailing list<o:p></o:p></pre><pre><a
href="mailto:NSRCA-discussion@lists.nsrca.org">NSRCA-discussion@lists.nsrca.org</a><o:p></o:p></pre><pre><a
href="http://lists.nsrca.org/mailman/listinfo/nsrca-discussion">http://lists.nsrca.org/mailman/listinfo/nsrca-discussion</a><o:p></o:p></pre>
<p class=MsoNormal><o:p> </o:p></p>
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