Carlos Acedo wrote:
> I'm trying to achieve DRC with surround51, I have the DRC configuration that
> is in many webs/forums:
> 
> pcm.ladcomp {
>     type plug
>     slave.pcm "ladcomp_compressor";
> }
> 
> pcm.ladcomp_compressor {
>     type ladspa
>     slave.pcm "ladcomp_limiter";
>     ...
> }
> 
> pcm.ladcomp_limiter {
>     type ladspa
>     slave.pcm "plughw:0,0";
>     ...
> }
> 
> If I do a speaker-test -c 6 -D ladcomp -t wav I only hear front-left and
> front-right

Probably because "plughw:0" is a stereo device.

> I have tried things like slave.pcm surround51 in fastLookaheadLimiter, and
> many combinations, but I always end up with errors like the device is no
> usable.

Make sure that speaker-test works with surround51.

It's likely that the device that implements surround51 does not support
the float-point samples use by the LADSPA plugin, so you have to insert
another conversion plugin; try using "plug:surround51:0" as slave.


Regards,
Clemens

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