At Sun, 19 Aug 2007 00:52:32 +0300,
Panayiotis wrote:
>
> I am trying to setup virtual surround sound with ALSA 1.0.13 under
> Ubuntu (feisty 7.0.4).
> I have created the following /etc/asound.conf:
>
> pcm.vsurround51 {
> type route
> slave.pcm surround51
> slave.channels 6
> ttable.0.0 1
> ttable.1.1 1
> ttable.0.2 1
> ttable.1.3 1
> ttable.0.4 0.5
> ttable.1.4 0.5
> ttable.0.5 0.5
> ttable.1.5 0.5
> }
>
>
> However I am reluctant to make vsurround51 above the default device,
> because I think that *real* 5.1 streams won't play correctly. If this is
> true, can I specify that the above device should only be used for the
> playback of stereo streams?
Use upmix plugin in alsa-plugins package.
Takashi
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