Hi Vladimir,
From: Vladimir Mosgalin <mosgalin@xxxxxxxxxxxxxxx>
Subject: Re: intel hda vs asus xonar STX
Date: Mon, 28 Sep 2015 04:40:28 +0300
> Hi Pierre Lorenzon!
>
> On 2015.09.27 at 19:13:17 +0200, Pierre Lorenzon wrote next:
>
>> In fact I expected such an answer but I would like not use jack
>> or pulse if not necessary. If the asus xonar essence stx is
>> able to mix sources there's no need to use more only enable it.
>
> Xonar STX ("AV100" chip which is basically the same as C-media 8787)
> does not support mixing multiple sources. So you have to either use
> pulseaudio or rely on something like dmix.
OK that's a very clear answer. In the passt I got dmix
functionning for an old sound chipset that did not have
mixing ability. In fact I forgot how I did that but I'll try
to find it again.
Thanks
Pierre
>
> (jack works too but I wouldn't recommend it unless you need low latency
> audio in professional audio-related applications, it can be a headache
> when used for typical multimedia tasks with random crappy software that
> wants to play audio)
>
> Note that if you have first model of *STX*, not ST or second STX model
> (actually I'm not sure about second STX), for quality reasons you'd want
> to avoid 44100/88200/176400 audio sample rates, so instead of default
> pulse configuration when it tries to pick audio rate to avoid conversion
> (e.g. you're playing single stream of 44100 music in your audio player -
> it sets card audio rate to 44100 because card supports it), you should
> lock the rate to 96000 or 192000 instead, e.g.
>
> default-sample-format = s24le
> default-sample-rate = 96000
>
> in pulseaudio's daemon.conf
>
> Lower audio quality and lower SNR in 44100 and multipies of it is quite
> audible. However, this only applies to PCI-E model (STX), PCI model (ST)
> has no problems with any rates.
>
> --
>
> Vladimir
>
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