3 thoughts about the fixed vertical offset:
1. I have no user experience except for the short demo I had. So question to the long time A8 users: did you ever feel the need for this, did you ever lay your head backward a bit on the couch and experienced the virtual speakers "lifting up" and did this downgrade the whole listening experience for you?
2. It is also possible to simply measure an extra PRIR while holding your head in this position (for the people who still have to make their PRIRs or have the opportunity to re-do their PRIRs without too much hassle, besides: also in Stephens proposed scenario you need new measurements with vertical lookangles anyway).
3. If this is not very time consuming for the Smyths to implement then please, go ahead. But if this would considerably slow down all the other things on their to-do list (including the complete normal vertical head tracking) then skip it.
So actually I fully agree with this:
1. yes. It was my specific question to Stephen. I recognise this when watching movies and lean back in my chair that the voices go up. But I have a huge screen in front of me so voices are still inside the picture, only at the top edge. But I think for people with "small" TVs voices will come from far above the TV then.
So for me it's not that important, I think more important is that you at least have the vertical measurements. But this seems to get easily very complicated so I tend to drop this and stick to just horizontal measurements.
2. Would be possible but difficult. And one reason for me asking Stephen was for measurements that you can't easily re-do (in a studio or high end home cinema etc.)
3. I don't know how time consuming this would be for them, but every new piece of code introduces the chance to get new bugs etc. I already told Stephen that I think most important is to have the possibility to at least measure vertical look angles.
But with Stephens answer I'd have a million new questions..