Re: [LAT] To much latency

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To: <linux-audio-tuning@...>
Date: Sunday, October 30, 2011 - 2:19 pm

On 10/30/2011 03:13 PM, Dave Stikkolorum wrote:

You can decrease the latency by lowering the number of frames. It is now
set to 1024, try 256 or even lower. I use a setting of 64 or 128 when
using a MIDI keyboard with a softsynth or sampler.

> how would i see the improvement with /usr/bin/jackd -S ?

No that's right. But it might improve performance of JACK regarding
xruns. -S means Synchronous or basically the ol' Jack1 way, some
soundcards work better that way.

> One of the annoying things is the delay between the midi keyboard

Yes, the lower the latency, the lower the delay between pressing a key
and hearing the actual sound. With a frames setting of 64 at 48Khz
system latency will drop to 2.67 ms (64/48000*2). Those are the kind of
latencies you want when using a MIDI keyboard.

Best,

Jeremy

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[LAT] rt kernel 2.6.39, Emanuel Rumpf, (Sun May 29, 11:56 am)
[LAT] To much latency, Dave Stikkolorum, (Sun Oct 30, 11:02 am)
[LAT] 3.x kernel, Emanuel Rumpf, (Wed May 2, 8:48 pm)
Re: [LAT] 3.x kernel, Robin Gareus, (Wed May 2, 8:51 pm)
Re: [LAT] To much latency, Jeremy Jongepier, (Sun Oct 30, 11:25 am)
Re: [LAT] To much latency, Dave Stikkolorum, (Sun Oct 30, 11:55 am)
Re: [LAT] To much latency, Jeremy Jongepier, (Sun Oct 30, 12:03 pm)
Re: [LAT] To much latency, Dave Stikkolorum, (Sun Oct 30, 12:23 pm)
Re: [LAT] To much latency, Jeremy Jongepier, (Sun Oct 30, 1:50 pm)
Re: [LAT] To much latency, Dave Stikkolorum, (Sun Oct 30, 2:13 pm)
Re: [LAT] To much latency, Jeremy Jongepier, (Sun Oct 30, 2:19 pm)
Re: [LAT] To much latency, Dave Stikkolorum, (Sun Oct 30, 2:39 pm)
Re: [LAT] To much latency, Jeremy Jongepier, (Mon Oct 31, 11:59 am)
Re: [LAT] To much latency, Dave Stikkolorum, (Tue Nov 1, 4:17 pm)
Re: [LAT] To much latency, Jeremy Jongepier, (Wed Nov 2, 5:34 pm)
Re: [LAT] To much latency, Rafael Vega, (Tue Nov 1, 12:25 am)
Re: [LAT] To much latency, Daniel James, (Tue Nov 1, 10:04 am)
Re: [LAT] To much latency, Rafael Vega, (Thu Nov 3, 12:33 pm)
Re: [LAT] To much latency, email.rafa@gmail.com, (Thu Dec 22, 2:50 pm)
Re: [LAT] rt kernel 2.6.39, Robin Gareus, (Sun May 29, 1:43 pm)
Re: [LAT] rt kernel 2.6.39, Emanuel Rumpf, (Sun May 29, 2:39 pm)
Re: [LAT] rt kernel 2.6.39, Robin Gareus, (Mon May 30, 3:52 pm)
Re: [LAT] Document on using Jack Apps, Daniel James, (Tue Aug 3, 6:48 pm)
Re: [LAT] [LAU] Are RT-patches needed anymore? (Was Re: &gt;..., Lars-Erik Helander, (Mon Feb 2, 8:53 am)
Re: [LAT] [LAU] Are RT-patches needed anymore? (Was Re: &gt;..., Fernando Lopez-Lezcano, (Mon Feb 2, 6:35 pm)