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Sound and latency? (Read 2521 times)
_020200_
Sound and latency?
Jun 3rd, 2005, 12:03am  
Ok, i tried Ess and Sonja and i got about 400ms latency on the Sounds. Is there anything i can do about that?
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pitaru
Re: Sound and latency?
Reply #1 - Jun 3rd, 2005, 2:16pm  
Regarding Sonia:

Which machine/os are you using?

On my P4 winXP box, upon opening Sonia, the processing prompt shows '413 ms' latency but its actually about 40ms (i just measured).

For installations (not for web distribution): If you register for jsyn on the softsynth site, you could also dl drivers for ASIO that will cut this latency dramatically. But you'll need an ASIO-type sound card for that.

amit
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_020200_
Re: Sound and latency?
Reply #2 - Jun 3rd, 2005, 7:27pm  
I am also at winXP with 1.4Ghz Centrino. The Plug says a latency of about 417ms, and it sure is that late...
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pitaru
Re: Sound and latency?
Reply #3 - Jun 3rd, 2005, 8:30pm  
wow, even my old w2k 933Mhz computer is not half a second behind. I wonder what's the bottleneck on your machine. Maybe the centrino or the sound sound card. Can anybody else confirm such latency on thier centrino notebooks?

amit
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4dplane
Re: Sound and latency?
Reply #4 - Mar 13th, 2006, 7:00am  
Well ... I have a 2.8 MHz machine with all the trimmings and I am getting 400+ milliseconds of delay. As mentioned before about the ASIO - that would probably work as I have seen it in audio applications and the latency is drastically cut.

Where is there info on how to set up ASIO and processing?

Thanks,

4dplane
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« Last Edit: Mar 19th, 2006, 2:39am by 4dplane »  
 
TomC
Re: Sound and latency?
Reply #5 - Mar 13th, 2006, 1:30pm  
Interesting.  My Centrino laptop (1.6GHz I think) reports 417ms latency too.  It certainly seems that far behind on live input, any sound reactive visuals I make seem more like visual echos Smiley

Amit - is there some code we can use to measure the actual latency?
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Newbie_Brad
Re: Sound and latency?
Reply #6 - Jun 13th, 2006, 11:40pm  
I also want to see how to use ASIO drivers like ASIO4All (http://www.asio4all.com) so I can use Processing constructs in realtime. Any latency greater than is now common in commercially available sound software is unnacceptable to me. Newbie Brad
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johanNL
Re: Sound and latency?
Reply #7 - Jul 24th, 2006, 6:43pm  
I had exactly the same problem initially but could solve it by manually setting the JSyn environment variable controlling latency to a smaller value. Read more at http://www.softsynth.com/jsyn/docs/host_pc.html
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pitaru
Re: Sound and latency?
Reply #8 - Jul 28th, 2006, 3:00pm  
on a pc, i created a new batch file called runSonia.bat in the main processing directory, with the following two commands in it:


SET PA_MIN_LATENCY_MSEC=50
processing.exe


this will set the jsyn latency to 50ms and then run processing. if you get click-pop sounds, than increase the latency until its resolved.

Amit
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Apheration
Re: Sound and latency?
Reply #9 - Jan 2nd, 2007, 10:53am  
pitaru wrote on Jul 28th, 2006, 3:00pm:
on a pc, i created a new batch file called runSonia.bat in the main processing directory, with the following two commands in it:


SET PA_MIN_LATENCY_MSEC=50
processing.exe


this will set the jsyn latency to 50ms and then run processing. if you get click-pop sounds, than increase the latency until its resolved.

Amit


I am running the ripple base example from (http://www.flight404.com/version8/index.html).  

After running the batch file I noticed the latency changed from originally 417 down to whatever I put in the batch file, but I can't get it to go lower than 30ms.  Does anyone know a way I can go lower My soundcard is an audigy 4.  

Even at 30ms the lag still seems like 1/2 a second.
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claudiomidolo
Re: Sound and latency?
Reply #10 - Dec 6th, 2007, 6:52am  
I explored this issue a little more in depth and found another solution for all the platforms look here:

http://claudiodt.blogspot.com/2007/12/processing-how-to-lower-audio-latency.html

Wink
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