Simple 5.1>WXYZ>5.1 using AC3 Filter

[Sycho]

I know that I and a few others have posted about this, and theres was only one solution and required re-encoding, but now I have created equations that you could put right into AC3 Filter. They are not perfect but its a start.

Assume that Lt, Rt, Ct, etc are outputs

Lt = 0.7711 L + 0.1587 R + 0.5558 C + 0.3304 SL -0.2819 SR

Rt = 0.1587 L + 0.7711 R + 0.5558 C - 0.2819 SL + 0.3304 SR

Ct = 0.4776 L + 0.4776 R + 0.5755 C - 0.0034 SL - 0.0034 SR

SLt= 0.5279 L - 0.2779 R + EDIT: 0.0085 C + 1.0817 SL - 0.2758 SR

SRt= -0.2779 L + 0.5279 R + EDIT: 0.0085 C - 0.2758 SL + 1.0817 SR

Now, I have a Live!5.1 but only stereo desktop speakers, so if someone could try this, that would be really, really great

[Sycho]

If you do try these equations, you may want to tone down the amount of centre in the surround channels EDIT: It has now been corrected(I added it by accident)