Originally Posted by maikeldepotter
Ok, so we are talking about the same Atmos position. What I meant to explain is that this position is not between side surround and rear surround but beyond rear surround. The order going from front to back is: SideSurround1, SideSurround, SideSurround2, RearSurround1, RearSurround, Rearsurround2
True - however, in my "quad-style" preset, Rear Surrounds
are set to none, Side Surrounds
are set to none. And native playback (no upmixing) of a 4.0 quad recording on SACD or a 5.1 SACD, show input meters for the surrounds as normal Side Surrounds as expected since that's the recording; but output meters show the Lrs2/Rrs2 channels getting the sound instead. IOW, it's mapping normal side surrounds to what is the Lrs2 & Rrs2 speakers. Those recordings don't have rear surrounds and with native playback, rears would be silent if I had them turned on. If you follow the order you listed, logically I would think there wouldn't be any sound from the Lrs2/Rrs2 positions either. Regardless of the ordering of channels, that's why I'm interpreting that the sound localization is in actuality is between the sides & rears
The sides are in actuality being mapped to the Lrs2/Rrs2 positions. What I hear is sides being re-directed to a pair of rearward surrounds instead of rears. Proof is in the listening as well as watching the meters
I may try turning on the rears to see how it behaves with a 4.0 recording. If it follows the order you describe, the Lrs2/Rrs2's might be silent and it goes to the rears. If it doesn't follow the order you describe, my rears would be silent.
However it's ordered, it works as I expected and allows playback of legacy 4.0 in the manner it was originally intended - 4 speakers in a rectangle. And that's all I cared about
The other facet is when these are on with Atmos, they didn't always get used while Ls, Rs, Lrs & Rrs did. Again, if it follows that ordering, I would think it would map to Lrs2, Rrs2 first and they would become the predominant source of "rear" surround with the actual rears being phantom imaged in some way but I admit I may not fully understand how the decoder is designed to map.
The decoder may be smarter than us, me anyway