On Thu, May 05, 2011 at 06:06:15PM +0100, Richard wrote:
 
>   Working with the numbers given and using W' as W*sqrt(2), I get  
>   (though I may have made the odd error)
> 
>   W'' = W (1.442)  + X( 0.0986)  +  j*Y(0.1075)
>   X'' = W( 0.133)  +X(0.43) - j*Y(0.543)
>   Y'' = j* W(0.143) + j*X(0.461)  +  Y(0.5)
> 
> ...
>  
>   W"" = W (1.019)  + X( 0.0986)  +  j*Y(0.1075)
>   X"" = W( 0.094)  +X(0.43) - j*Y(0.543)
>   Y"" = j* W(0.101) + j*X(0.461)  +  Y(0.5)
> 
>   which looks a bit better, though still not a perfect reconstruction.

It is *not possible* to reconstruct the original W,X,Y from just two
signals (L,R). Whatever reconstruction will be a compromise with the
paramters (hopefully) determined by psycho-acoustic considerations.

-- 
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