> > > What do you mean? Is it that the software takes the average of two or more > > 8-bit quantities and then outputs them to one channel? > > Mixing would only be used when dealing with more that 6 channels...
As an idea, how about piping the output of the surround-sound channels through an analogue switch, so depending on how it's set, the channels are added to the others using a resistor or not... that way it'd be really easy to do it and keep all versions compatible without worry about software overheads... should cost 2 pounds at most for the chip -- a 4066 should do (or so I am told by my erstwhile companion, Martin Rookyard) Si
