<div>15-20 ms should be perceptually enough (visual-sound or motor-sound), some people put it at 40, but a percussionist would definitely notice it. I suppose one has to learn it and make it part of the instrument, latency in an acoustic piano can be as high as 100ms...</div>
<div> </div>
<div>But the problem is that the pad probably makes a noise, and the perceptual latency for two sounds to fuse is not more than 5ms...</div>
<div> </div>
<div>J<br><br></div>
<div class="gmail_quote">On Sat, Dec 27, 2008 at 12:00 PM, Lao Yu <span dir="ltr"><<a href="mailto:noise.now@gmail.com">noise.now@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="PADDING-LEFT: 1ex; MARGIN: 0px 0px 0px 0.8ex; BORDER-LEFT: #ccc 1px solid">Zero latency is a marketing slogan but it is physically impossible.<br>the only way to have something close to that would be monitoring<br>
BEFORE the AD converter. even a stand-alone digital tape recorder has<br>a few ms of latency simply caused by A/D and then D/A conversion.<br>reducing the sample rate doesn't change the latency. but Frank said<br>all that already.<br>
you need to find latency in the settings of your interface. in pd you<br>set the latency in the 'delay' value of the audio settings dialog or<br>in the settings of jack (I don't know which you use). The default is<br>
50ms which is too high for my taste for life music. The lower your<br>latency setting the higher the CPU load. Set it to a time value that<br>you can accept without pulling too much power out of your machine.<br><br>Best<br>
Jurgen<br>
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<div></div>
<div class="Wj3C7c"><br>On Dec 28, 2008, at 12:11 AM, Frank Barknecht wrote:<br><br>> Hallo,<br>> Juan Felipe Mejia hat gesagt: // Juan Felipe Mejia wrote:<br>><br>>> hi everyone, im a beggining to work with Puredata and a TD 9<br>
>> Roland v-<br>>> drums.<br>>> I'm using a MOTU ultralite mk3 as my in-out audio divice.<br>>> I work with a MacBook Pro, 2.5 Ghz Intel core duo, 4 GB of ram.<br>>><br>>> Until now almost everything is working properly but the latency.<br>
>> Does anyone now how to get the 0 latency en puredata?<br>><br>> Zero latency is impossible in a computer software if you do some<br>> processing of the incoming data before sending it out again.<br>><br>
>> i've tried to reduce the sample rate to 30000 and even lower, the<br>>> same<br>>> with the delay but there is still some latency.<br>>> Lower than 30000 works better but the sound quality is bad.<br>
><br>> Generally latency shrinks with higher samplerates and gets larger with<br>> lower rates, provided you have the same blocksize.<br>><br>>> I tried AudioDesk (the software that comes with the MOTU) to make<br>
>> some<br>>> live recordings and there were no delay, no latency.<br>><br>> Probably the soundcard is sending incoming data straight through,<br>> so no<br>> processing is going on. Otherwise see above: Technically 0 latency is<br>
> impossible.<br>><br>> Ciao<br>> --<br>> Frank<br>><br>> _______________________________________________<br>> <a href="mailto:Pd-list@iem.at">Pd-list@iem.at</a> mailing list<br>> UNSUBSCRIBE and account-management -> <a href="http://lists.puredata.info/" target="_blank">http://lists.puredata.info/</a><br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br>Jaime E Oliver LR<br><br><a href="mailto:joliverl@ucsd.edu">joliverl@ucsd.edu</a><br><a href="http://www.realidadvisual.org/jaimeoliver">www.realidadvisual.org/jaimeoliver</a><br>
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