Extract LRCS channels from a pro-logic encoded wave file

[kyap]

Hi,
I am trying to create a 5.1 AC3 audio file from a pro-logic encoded wave file. I plan to extract the individual L, R, C, S and LFE mono channels from the pro-logic wave so that they can be muxed into an AC3 file with 5.1 discrete channels.

Can anybody advise me on the extraction? I believe extracting the C, S and LFE should be the tricky part....

Thanks.

[au7usa]

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