I am being critical here, and it's on purpose, because any theory needs to be criticised and then defended. Again, I like both your and Dreadp1r4ate's (DRP from now on to save typing) theory that the purrs have meaning. I believe the same. I don't think this is it though, as it has some serious holes in it so far. I would happily be proven wrong though!
Below are my main criticisms of this theory.
1. The "6 minute" limit is based on a loosely formulated patch notes. It is so vague, we don't really know in what context it is to be taken. We all believe it limits the UPs sound to a 6 minute interval, but we don't have recordings over much over 6 minutes to prove it. We only have lots of short ones, that we really can't compare.
2. When you group a consistent stream of sounds into groups of 3s, how do you decide which sound to start with? There is no clear starting point, so you can choose any sound to start with and they would all give the same answer. That's the theory, right? So, the transcription used for DRP's solution needs atleast 2 more sounds on either side of his solution. Then you would start it one sound to the left, two sounds to the left, one sound to the right, and finally two sounds to the right and the answer should be the same. I
highly doubt that's the case, but since we don't have those we can't check. And, to extend that, the next symbol in the line
has to be the first symbol that the segment started with, because if it isn't then the answer is different by moving one 3-bit. There can be no arbitrary "6 minutes anywhere". It has to be a repeating signal for it to have the same answer over and over again. Right now, it does not have this as far as I can tell.
3. There are inconsistancies in his solution, counting stars and ringed bodies in different sets. He even missed a double that he counted as single, and when he was made aware of it he just "updated his theory on the fly." He also arbitrarily designated 3-bit sequnces to Stars and Asteroid belts, as they fit his theory with that given solution. This to me indicates someone looking for a solution, finding something that may fit, and going in that direction. It feels forced, reverse engineered, call it what you want. It does not
feel like a solid scientific breakthrough.
His theory is however easily confirmed.
1. Get a good clean recording of about 6:30 and note all purrs. This should give you about 3-6 extra purrs (3-9 second intervals between them). Start with the first one and stop at 6 minutes. Check the result. Now start with the second purr and stop at 6 minutes from that. Check the result. If they aren't consistent, it is not the solution. And now you see, the first signal after 6 minutes MUST BE the same as the first signal for the sequence to be true for
all 6 minute segments.
2. Or, take the UP out to a system that only has one star, nothing else. Check a couple of purrs. If they are not all the same; solution gone...but it could then be argued that it only purrs another system (eg. the system it was picked up at originally, Merope, the system we should visit, etc etc). Solution, go to test #1
Again, I believe the purrs, wails, and even chirps have some other meaning to them. It would be very strange to me if they didn't. I just don't see this as a solution...yet. It may be a step in the right direction though.