[hpsdr] Mercury v2.4 -- still distorted audio ( Atom 330 )

[Philip Covington]

On Sat, Jan 24, 2009 at 2:58 PM, Doug Bade <kd8b at thebades.net> wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> In mine, nothing besides what is on the motherboard... Only 1 usb device
> plugged in, the cable to the HPSDR...
>
> Doug
> KD8B
>
>
>
> At 02:47 PM 1/24/2009, Bill Tracey wrote:
>>
>> Is there anything else on the USB bus on the Atom boxes?  Wondering if
>> we're not taking a perf hit with contention for the USB bus?
>>
>> Regards,
>>
>> Bill (kd5tfd)
>>
>> At 01:42 PM 1/24/2009, Doug Bade wrote:
>>>
>>> ***** High Performance Software Defined Radio Discussion List *****
>>>
>>> Mine is the Atom 330 board.. lIt seems the usb subsytem is slower than
>>> expected by the software... as an above board Pci USB card did not help
>>> either... CPU load is very low but high processing rates seem to flood the
>>> data on the usb ..and introduce nasty distortion and garble.... Only the
>>> highest setting is broken, but some of the lower pairings introduce clicks
>>> and pops as well as high cpu load... Experimenting on mine I settled on 192k
>>> with buffers set to 1024...
>>>
>>> Doug
>>> KD8B
>>
>
> _______________________________________________
> HPSDR Discussion List
> To post msg: hpsdr at hpsdr.org
> Subscription help: http://lists.hpsdr.org/listinfo.cgi/hpsdr-hpsdr.org
> HPSDR web page: http://hpsdr.org
> Archives: http://lists.hpsdr.org/pipermail/hpsdr-hpsdr.org/
>

The QS1R with SDRMAXII/QS1RServer runs perfectly up to 2 MSPS (which
is more than 10x faster than 192k) on the Atom 330 board I have.  I
don't think your problem is with the USB ports or the Atom board.

Regards,
-- 
Phil Covington
Software Radio Laboratory LLC
Columbus, Ohio
http://www.srl-llc.com
---------------------------------------------------------------------------------------------------------
QS1R SDR Receiver Support Group: http://groups.yahoo.com/group/qs1r
---------------------------------------------------------------------------------------------------------

 1232833030.0