[mythtv-users] Digital Audio out with Via chipset

[James Armstrong]

>>> are not working on the digital out. It works fine using the analog IE:
>>> using the myth volume up and down changes the level. But when I use the
>>> digital I get the full volume and no way to control it.
>>
>>
>>
>> I'm thought S/PDIF is always at maximum volume (or better: there is no 
>> volume). At least my EPIA is also always on fixed volume, and I use my 
>> amps volumeknob to change the level.
> 
> 
> since SPDIF sends the raw PCM stream, I'd guess the only way to adjust 
> the volume would be to resample or scale the bits on the fly - sounds 
> unlikely. I could easily be wrong :)
> 
> I'm sending SPDIF to my amp - which has a remote control volume knob...

I'm using SPDIF on the Soundblaster Audigy. Controlled by ALSA. Volume 
control works for me. I don't have to mess with the amp. The driver 
probably just changes the amplitude before converting it to a digital 
stream out the SPDIF.

- James