Preface: There has been some delay in me posting this as I’m semi on vacation and have not had much time. As such it took me longer to compile the data and complete the tests than expected.
Entering into the tests I set out to check when wail/howl (I use the term wail and howl interchangable, apologies if I confuse) would be provoked.
Methodology: I dropped the UP by different celestial bodies and listened to it and scooped it up at 50%
Results
SPF-LF 1 planet 7 (Ice)
30ls- 3 wails
103ls- 0 wails
48ls- 0 wails
40.4ls- 0 wails
39.6ls- 3 wails
Note: There are multiple tests here as I was establishing the distance from the planet I had to be to make the wails stop or start. It appeared to only occur within the “Sphere of Influence”. For clarification the Sphere of Influence (SOI) is listed on the bottom left hand corner of the HUD. I use this term as I don’t have a better one but it includes not just celestial bodies but also shipping lanes and stations.
SPF 1-LF 1 (red dwarf)
10.9ls- 0 wails
Luyten’s star 2 (gas giant w/ water based life, 2 rings, no moons)
2.36ls- 3 wails
Luyten’s star 6
30ls- 3 wails
LHS 1951 B 1 (gas giant with ammonia based life, no rings, no moons)
11.4ls- 3 wails
LHS 1951 A 2 (Earth like w/ station: Hobaugh Orbital)
1.47ls- 3 wails
Hobaugh Orbital
540m- 0 wails
(Note: This sequence tests to see if distance or sphere of influence is the deciding factor. As such Hobaugh orbital recording (which was in the SOI of the station) was closer to A 2 than the A 2 test, however it did not provoke any wails despite being closer. Reaffirmed: Sphere of influence determines wailing behavior. It also appears that the SOI do not overlap, there is only one SOI and that is the one listed)
LHS 1951 A 1 (high metal, with station in orbit)
0.16ls- 3 wails
Wasat A1 (high metal, volcanism, rings)
3.58ls- 3 wails
Shiboleth Belt cluster 1
(in the instance)- 0 wails
Zach C (brown dwarf)
1.48ls- 0 wails
Uchaluroja a 1 (metal rich)
20.8Mm- 3 wails
Hip 17692 A 1
0.68ls- 3 wails
Pleione 3 A
643km- 3 howls
Pleione 11 A
5.93Mm- (Internet connection issues occurred, scooped early to avoid loss). 1 wail noted, but probe was scooped early.
Conclusions: Sphere of influence determines if the UP wails. Planets/moons all appear to cause wails. Stars, asteroid belts, and stations do not.
The follow portion are things that I noticed during experimenting that I was not directly testing. As such they are not concretely listed in the results and were not subjected to the same testing rigor.
My observations: The wails appear to happen at *relatively* set intervals. The for instance the first wails always seemed to be 87-89% UP degradation, the other wails occurred similarly within a 1-3% degradation range.
To M Vol
I was planning on testing your theory but cannot currently record. However, using the set intervals I can speak partially about what I found. When I honked with the ADS it appeared the UPs interval timer between wails was frozen. The wails did not appear in the interval expected, instead they were pushed back by the duration of the transmission. I plan to get a full recording at some point and more specifics, this was just a quick test out of my curiosity. I hope it serves to pique curiosity and fully have the sequence tested.
To Dreadpirate and Rizal (and others I may have missed who share this theorycraft)
Don’t write off your theory yet, but don’t try to force the puzzle pieces in. I believe
Arguendo makes some excellent points that you should heed. Perhaps the signal instead of *just* listing what is in the system goes about it in a different way?
For instance.
Instead of listing one entry for *each* instance of a celestial body in a system maybe it lists by groups. For instance, instead of saying, Star, planet, moon, moon, moon, moon and not listing celestial bodies that are not present. It may say Stars 1, planets 1, moons 4, 0 asteroid belts. It would also make an over 6 minute message for systems with just 1 star as it lists what’s there as well as what isn’t.
Also of note: Don’t try to assume too much. Maybe part of the signal is a thumbs up or a thumbs down for what the probe is looking for? We have more symbols than possible interpretations, don’t force interpretations just so *something* can fit, leave it open to interpretation on some of the other symbols. When we can get more recordings this will help. Now that some of the basics of the UP mechanics are known we should be able to control for more variables with future research.
@Vent, if you have any good data to add tack it on