lkml.org 
[lkml]   [2006]   [Oct]   [8]   [last100]   RSS Feed
Views: [more markup]  [less markup]  [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: PCM distorsion snapshots from SATA/ALSA conflict (was: [Alsa-user] Pb with simultaneous SATA and ALSA I/O)
FromLee Revell <>
DateSun, 08 Oct 2006 12:41:13 -0400
(it's probably a bad idea to attach .jpgs to a LKML post - please post
them on the web and send a URL)

On Sun, 2006-10-08 at 12:38 +0200, Dominique Dumont wrote:
> Anyway, the oscilloscope shows that:
> - a spike occurs every 330 useconds (about 3kHz)
>   (note: 330us is 15.85 times the period of the 48KHz spdif stream) 
> - the spike level roughly matches the level of the sine waves 330
>   useconds sooner
> 

You seem to be using a period size of 256 samples - any change if you
use a larger period size?

Any change if you use setpci to increase LATENCY_TIMER for the SBLive!
card?

Lee

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-10-08 18:43    [from the cache]
©2003-2008