[MPlayer-dev-eng] [PATCH] ao effect plugin: extrastereo

Anders Johansson ajh at atri.curtin.edu.au
Sun Mar 3 12:59:45 CET 2002


Hi,

Looks cool from where I' standing. Apply it I want to hear what it
sounds like. If you feel like writing some docs they should be added
to the end of the file DOCS/sound.html. 

//Anders


> Hi,
> 
> Here is a port of extrastereo plugin from xmms, which sometimes enhances
> some audio outputs (YMMV).
> 
> Patch + file pl_extrastereo.c to put in libao2 attached.
> If there's some interest and it's OK, I'll commit it.
> 
> 
> Usage: -aop list=extrastereo
>        -aop list=extrastereo:mul=4.2
> 
> The algo is:
>   avg = (l + r) / 2
>   l = avg + mul * (l - avg) 
>   r = avg + mul * (r - avg)
> 
> Default mul coefficient is 2.5.
> If mul=0.0 => mono sound
> Id mul=1.0 => unchanged sound
> 
> -- 
> Best regards,
>   pl



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