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PostPosted: 26 Sep 2009, 11:24 
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Hi guys, got a Behringer SRC2496 DAC / ADC and just hooked it up to my computer to give it a listen before I plug it into the stereo system.

I am getting the signal from the SPDIF (coax) of an on-motherboard (OMB) soundcard. However I notice that the digital output from the soundcard is fixed at 48kHz regardless if I play a 44.1kHz file or 96kHz file. Does anyone know if this is a software seting or is it a hardware / soundcard limitation? Any help is appreciated as I am a novice when it comes to digital sources.

Computer consists of Windows XP, onboard sound (Realtek HD), player is Winamp or Foobar. Long-term it will be used as a DAC from a CDP and Squeezebox but for now I'd like to figure out the computer end.
Cheers

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PostPosted: 29 Sep 2009, 13:02 
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Hi Gio,

It's not a hardware issue, your spdif is capable of 44.1/48/96/192, (depending on which one you have...), it's software related!!

Can you tell me exactly which realtek hd you have, ie.: ALC888/ALC880 etc and also the version of drivers you are currently using.

From that info i should be able to point you in the right direction..... :wizard:

Dave.

P.S. It is not good to have the sound converted from it's native bit-rate to another, especially on the fly, degrades the sound output so getting your spdif to output in its source bitrate is our goal, then we'll get into bit-perfect playback etc........are you ready........get set........clik:file....:preferences....:open control panel.....:etc etc etc... :ugeek:


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PostPosted: 29 Sep 2009, 19:24 
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Hi Dave, from the MB manual: Realtek ACL1200
The driver version is 5.10.0.5667
Thanks!

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PostPosted: 30 Sep 2009, 16:17 
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Maybe it is time to upgrade to a cheap sound blaster Live! card, they are the easiest ones to find drivers for and you can get them for about 10 bucks at a used computer parts store.

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PostPosted: 30 Sep 2009, 18:07 
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Hi Alan, the original plan was to use a squeeze box as a digital source. However it will not play 24bit/96kHz files! :x For the time being I won't get a soundcard unless I decide to go to a dedicated Home Theatre PC with passive cooling.

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PostPosted: 01 Oct 2009, 15:34 
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Gio,

From what i can tell, you have the latest drivers, I am not familiar with that particular on-board card so i'm afraid i'm not much use!! You could try using kernal streamer or ASIO drivers, you will also have to D/L the corresponding plug-in for foobar or whichever player you are using, for foobar, just unzip the plugin to your (foobar installation folder)-->components, when you restart foobar and go to FILE-->PREFERENCES-->PLAYBACK-->OUTPUT you can then choose ASIO as your output device.

If you then start the ASIO off-line settings application, (installed with ASIO), you should be able to configure the (advanced) settings - it is quite difficult for me to explain this, if i was sitting at your PC i would have done all this in less time than it took to write this post!!

Once you have got this far, let me know if you get stuck and i'll try to advise further... :up:

Foobar plugin for ASIO:

http://www.foobar2000.org/components/view/foo_out_asio


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PostPosted: 01 Oct 2009, 20:54 
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Thanks, I'll give it a whirl, but I won't get my hopes up seeing that it is on-board sound.
Cheers

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PostPosted: 03 Oct 2009, 14:16 
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I found the problem and it was software. The output device was set to output 48kHz. The card can output 44.1 to 192kHz. So problem solved.

However, it seems that the output is fixed. If I set the digital output to 96kHz and play a 44.1kHz file, the output is 96kHz. So for best performance should I be manually changing the output to match that of the file being played?

Thanks.

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PostPosted: 05 Oct 2009, 15:30 
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mmmmm, as i said, i am not familiar with that particular sound device, but from what i remember from other similiar, (could be wrong), you could set the output to 'AUTO', the sound device would then output at the native rate rather than convert... i think it was somwhere in the realtek hd sound manager (or whatever it's called now...??) sorry i couldn't be more help!! :blush:


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PostPosted: 05 Oct 2009, 19:05 
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Unfortunately there is no auto setting. You have to pick one of 44.1 / 48 / 96 / 192 kHz. I won't complain, as it is an onboard sound card.
Thanks for helping.
Cheers

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