[mythtv-users] Audio to 3 devices

[Josu Lazkano]

Hello list,

I am trying to configure a frontend to get 3 audio output:

1. Analog -> Piped music: Stereo and no volume control
2. HDMI -> TV: Stereo and volume control
3. Optical -> Amplifier: ALL (stereo, dolby, DTS...) no volume control

This is my devices:

$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC892 Analog [ALC892 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 1: ALC892 Digital [ALC892 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

$ aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
default:CARD=Intel
    HDA Intel, ALC892 Analog
    Default Audio Device
sysdefault:CARD=Intel
    HDA Intel, ALC892 Analog
    Default Audio Device
front:CARD=Intel,DEV=0
    HDA Intel, ALC892 Analog
    Front speakers
surround40:CARD=Intel,DEV=0
    HDA Intel, ALC892 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Intel,DEV=0
    HDA Intel, ALC892 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Intel,DEV=0
    HDA Intel, ALC892 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Intel,DEV=0
    HDA Intel, ALC892 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Intel,DEV=0
    HDA Intel, ALC892 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Intel,DEV=0
    HDA Intel, ALC892 Digital
    IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=NVidia,DEV=0
    HDA NVidia, HDMI 0
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=1
    HDA NVidia, HDMI 1
    HDMI Audio Output
hdmi:CARD=NVidia,DEV=2
    HDA NVidia, HDMI 2
    HDMI Audio Output

How could I configure this? with ".asoundrc" file? frontend audio configuration?

I normally use the TV speakers (HDMI), so I want to have the volume
control over it. For the piped music and optical outputs, I prefer to
get always same volume (I will control with the amplifier remote).

Is this configuration possible?

Thanks and best regards.

-- 
Josu Lazkano