[Voyage-linux] Re: voyage-mpd and Ayre QB9

[Demian Martin]

Nick:
Some uSB devices like the Wavelength proton have volume controls that are
controlled through the USB interfaces. In the Proton the control is on the
analog side.
      -Demian

-----Original Message-----
From: Nick L. [mailto:nycparamedic at gmail.com] 
Sent: Tuesday, May 03, 2011 7:50 PM
To: Demian Martin
Cc: voyage-linux at voyage.hk
Subject: Re: [Voyage-linux] Re: voyage-mpd and Ayre QB9

On Mon, May 2, 2011 at 6:13 PM, Demian Martin <demianm_1 at yahoo.com> wrote:
> We have had good success with Voyage Linux, the latest Alsa (1.0.23 &
> 1.0.24) and The Wavelink from Wavelength that uses the same code for the
USB
> interface. Here is the specific section of MPD (again latest) that we use:
>
> audio_output {
>       type          "alsa"
>       name          "USB"
>       device        "hw:1"    # optional
>       mixer_device  "hw:1"        # optional
>       mixer_control "PCM"         # optional
>       mixer_index   "0"           # optional
> }
>
> This bypasses any other setup configs in the system...


Demian,

What's the advantage to including mixer_device, mixer_control and
mixer_index in the configuration?