[AG-TECH] Realtek HD compatible RAT

[Douglas Kosovic]

Hi Andrew,

That's very interesting about the multi-stream playback option in your 
Realtek control panel, I don't see that option anywhere. I'm using a 
MacPro with a Reltek ALC885 and have headphone and line-out enabled. 
Regardless of what I do, the "Realtek HD Audio output" mixer is the only 
output mixer that gets listed. I have no idea why, perhaps it might have 
to do with differences in the way PC manufactures wire up and configure 
the ALC88x.

Anyway, I would like to have RAT given separate input and output device 
support added eventually.

Cheers,
Doug

Andrew Rowley wrote:
> Hi,
> 
> The Realtek does allow you to have two inputs and two outputs - you
 > have to enable multi-stream playback from the Realtek control panel.
 > This may only be on later models (mine is an ALC882).
> 
> Anyway, the important thing is that this works now, so great work and thanks!
> 
> Andrew :)
> 
> =============================
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> -----Original Message-----
> From: owner-ag-tech at mcs.anl.gov [mailto:owner-ag-tech at mcs.anl.gov] On Behalf Of Douglas Kosovic
> Sent: 14 December 2007 00:34
> To: ag-tech at mcs.anl.gov
> Subject: RE: [AG-TECH] Realtek HD compatible RAT
> 
> Hi Andrew,
> 
>> Great work - just tested on my home PC.
> 
> Glad to hear it worked.
> 
>> Will this code go in to the SUMOVER repository?
> 
> Definitely.
> 
>> One thing I was wondering was if you could have a selection of input
>> and output devices?  I don't know if it would actually work, but it
>> might then allow Rat to be used with Webcam microphones...
> 
> I was originally thinking of providing separate input and output device
> support, but settled on doing a simple solution first. In order to
> prevent clicks, pops, and other audio artefacts, it's important for
> multiple audio cards to be synchronized and not drift apart over time,
> for a single audio device this is a non-issue.
> 
>> Also, the HD sound cards allow multiple paths - a selectable input and
>> output device should allow you to configure based on these paths
> (again
>> I think this is the case, but I haven't tried out what actually
> happens here).
> 
> For the Realtek HD, I've only seen a single output mixer with multiple
> input mixers. I'll be interested to hear if there are HD devices with
> more than one output mixer.
> 
> 
> Thanks,
> Doug
> 
>