[tomsem]

If a song is not encoded in SA, it won’t play in SA, even if headphones are in SA mode. They don’t convert on the fly.

You can turn headphone SA mode off and on in Control Panel. It makes absolutely no difference if the song is not Dolby Atmos encoded.

In Music Settings, there are three options for Dolby Atmos:
* Automatic
* Always On
* Off

I have no idea what the difference is between Automatic and Always On. The result seems to be the same either way (songs either have it, or they don’t, and play back accordingly).

Yes, I can believe there is ‘good SA’ and ‘bad SA’, but if you have separate tracks for each instrument/vocal, as would be best practice these days, it seems to me you have what you need to create ‘good SA’. But if it is 4 track from early 60’s and you have more than 4 parts, then it’s more work to get it to be ‘good’. But as I said, it is just another thing that Machine Learning will probably be able to do better than humans, even with only Mono to start with.

I do see the case for head tracking if it is music video and you are sitting there watching it. But if your phone is in your pocket it makes no sense.