Re: CMI8738-MC6 surround40 plugin on 4 SP systems]

[Marcel <shizuma@magma.ca>]

* Takashi Iwai (tiwai@suse.de) wrote:
> At Thu, 30 Oct 2003 12:42:39 -0500,
> Marcel wrote:
> > 
> > 
> > I've been trying to finetune my cmipci for several weeks now.   And this is
> > the best way I've been able to get transparent operation with various audio
> > material: stereo, mono, 4.0, 5.1.  The main problem being no surround sound
> > iif "Exchange DAC" setting was not set, and sound on the rear speakers only
> > if it was.
> 
> ah, this might be true.
> does it happen both on 4.0 and 5.1 outputs?
> i don't remember that it's necessary for 5.1 at the last time i
> tested.

With surround40 plugin, 4 speakers, yes it's needed for both 4.0 and 5.1
material.  Applications such as mplayer or xine will remix 5.1 material to
4 channels.  For 6 speakers systems, I really don't know.

> perhaps we should simply remove this control from user and handle
> internally for the MC6 chip.
> 

I agree.  Its usage is confusing and may results in improper operation


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