--- Ulrik Nissen <[EMAIL PROTECTED]> wrote: > > Hi FLACers > > I'm studying music production and am currently doing an analysis of > the FLAC format. If anyone has the knowledge and a minute to explain > i would greatly appreciate any help. One thing that i cannot make > sense from in the FLAC documentation (a thing that is hard to find > info on in general) is how the decorrelation fase works exactly. I > understand that the two channels in a stereo file can have > similarities that can be exploitet when compressing, but why is this > transformation used: mid = (left + right) / 2, side = left - right? > Is it simply to straighten out the signals and thereby having less > information to compress?
it's a simple way to try and move information that is in both channels into one so it only has to be represented once. calculate by hand the transformation on a stereo file with 2 identical channels and see what you get. this is the optimal case. Josh __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com _______________________________________________ Flac mailing list [email protected] http://lists.xiph.org/mailman/listinfo/flac
