Hey guys first post here. I've been following the the thread for a while now. It's really great to see all the investigations / tests / etc going on
Just had a quick observation: ratking15's tests above are the first time I've heard the UA purrs occur in short groups of 3 or so for so many blocks in a row. In the recordings/videos I've listened to so far they're usually in groups of 5 or 6 (if you only include the clear purrs before the howl).
During part 1 above, when you can hear the UA clearly it's generating purrs in groups of 5 (counting clear purrs only), and then at around 7:30 into the first video they slow down to 3 and 2 purrs. This also continues from the start of the second separate UA drop (at 9:10) in part 2 (best heard in the blocks at 10:48 onward). I thought it was interesting that it continued with the short groups rather than groups of 5 or 6.
I wonder if this might mean that it picks up at the point it left off for each drop and continues purring out whatever trying to say (if anything at all).
So can someone confirm this?