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Meitner MA-1 issue with DSD and ASIO

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Ychng:
Snodger,

any results on the experiment after resampling the file? Curious to see what you find.

Yeang

thesnodger:
Hey,

Yeah I had no software to resample to 352 and back down again. 192>192 did nothing, the same dropouts in the same places.

However sampling to a lower bitrate always fixes the problem. So does doing something like applying gain reduction, becuase I would assume it has to competely re-write the file.

I did notice last night for the first time a couple of drop outs playing a native DSD file!

I'm assuming there is something up with the drivers?

I've just fitted a SOtM PCIe USB card, and that hasnt made the slightest bit of difference to this issue.

Let's hope Meither come up with a fix.

Ychng:
Hi Snodger,

I'd be interested to hear if resampling up then back to 192 will work. Obviously 192-192 probably just copies the same data over.

I have not experienced any dropouts so far with DSD (knock on wood). However, I find that the computer configuration is critical in terms of eliminating dropouts. I used to have dropouts on my Mytek playing DSD when I used my notebook which was not optimized for playback. When I moved to my custom PC build all those disappeared.

You might want to try the thesycon latency checker to see what latency your computer has at idle. Just google thesycon latency and download.

Here is a great guide to optimize latency on your playback computer:
http://www.cicsmemoryplayer.com/index.php?n=CMP.Guide

There are several sections further on that deal with this issue. On my dedicated playback computer I have MC 17 and a low resource antivirus (NOD32) installed. That's it. Minimal install of Win 7 64 bit.

Yeang

thesnodger:
Hi Yeang,

My Windows 7 x64 PC is tweaked to the bollocks (pardon my French). I literally have 6 services running, Media Center 17 runs as the shell (no Windows Explorer) and nothing else. At all...

I also set Media Center to run as 'High' priority using 'Prio'. All the other possible optimistions that you see in that giude (and others) have already been done.

However, I haven't tested the latency tool - good idea. I'll double check to make sure I don't have a driver or other hardware problem.

PS. I confirmed I was getting the dropout using a default 'vanilla' Win 7 build before I tweaked the hell out of it.

Matt:

--- Quote from: thesnodger on September 03, 2012, 05:48:31 pm ---I also set Media Center to run as 'High' priority using 'Prio'.
--- End quote ---

I would not recommend this.  It could easily lead to playback problems, since it causes threads we schedule as low priority to get elevated enough that they can begin to compete with time-critical playback threads.

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