Opened 4 years ago

Last modified 4 years ago

#3 new defect

analog and spdif sound are "saturated"

Reported by: admin Owned by: somebody
Priority: major Component: wandboard
Version: 0.0.1 Keywords: sound
Cc:

Description (last modified by admin)

On wandboard, when we try to use SPDIF or analog output the sound it totally saturated while it is OK for HDMI

Change History (5)

comment:1 Changed 4 years ago by admin

  • Version changed from 0.0.2 to 0.0.1

comment:2 Changed 4 years ago by admin

First lowering the volume in XBMC sound settings is a workaround for this issue.
In fact there is no volume control for alsa sink in XBMC so it may revert to software volume increase that ends up clipping everything at max level (Not sure : I have to check the code)
Solutions I can think about :

  • use pulseaudio (as xbmc will then properly interact with it to set mixer volume)

or

  • implement real volume control for alsa sink
Last edited 4 years ago by admin (previous) (diff)

comment:3 Changed 4 years ago by admin

  • Description modified (diff)

comment:4 Changed 4 years ago by admin

pulseaudio is not the solution as it does not support passthrough so far

comment:5 Changed 4 years ago by admin

I have found that it happen only for 24bits samples (not 16bits) So as a qucik workaround I have pushed this workaround for utilite : https://github.com/wolfgar/utilite/commit/b565d5fc613b00f4853fd7048db82f272f112de2
I will move the hack in XBMC and continue to track the real issue for sure.

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