Note: Am not a HB. Just asking questions and looking for an answer. Pls. no hate, thanks. (also I'm typing quickly that's why my grammar sucks).
Came across this video:
Lot's of it is obviously explainable, usually just by the astronaut touching the object that's making the noise, but some of it is weird. Check out 1:48, for example. The object falls over and makes a metallic banging sound, but the astronaut doesn't appear to be touching it. There are some other noises like that, too, but not much. The footsteps are also explainable too because the feet act as a medium for the sound waves.
I have a few explanations, but they're not exactly solid.
1. The sound was caused by the astronaut touching the object. As for 1:48, for example, it may look like the astronaut's foot is touching the object, though that's iffy.
2. The sound travels through the ground. This is, IMHO, a more likely explanation for 1:48. Though, not for all the other parts.
3. Becuase there were 2 astronauts, it's possible the sound originated from whatever the other astronaut was doing too.
4. Because sound in mission control could also be picked up, it's possible that some sounds came from Houston.
and, lastly, i've seen another thread on this forum discussing the same ideas of sound. JayUtah had an excellent, and very technical explanation:
LM was mic'ed; it had a cabin recorder. It was not "powered down" in the least; it was the relay for the suit circuit. The suits used a sort of daisy-chained VHF circuit which was picked up by the VHF antennas on the LM and upconverted to the S-band to Earth. Outside the range of the LM, the LRV played the role of VHF-USB relay.
Though I can't make any opinion on much of the technical aspects, this seems reasonable.
I also know that electronics and vacuum tubes can sometimes act as microphones and send any sound data too.
Is there any other explanation? Which of these is most likely?