time code & noise log
recording started at 7:00am on 5/14/16
microphone placed at east wall of bedroom (G line)

sounds much louder & with a lot more vibration in real life.

13:25
- long droning noise - low frequency - with rushing water afterwards from east wall

14:50
- short squeak - east wall

15:23
- short squeak - east wall

28:58
- short squeak - east wall

1:33:26 - 1:34:00
- multiple creaks 

2:15:15 -- 2:15:40
- short squek/groan
- long droning - low freq - with water rushing afterwards - from east wall

There were (and always are) additional squeak/groans/droning from both east & west walls afterwards.

In general, these sounds occur everyday between 7-9am and at night between 9-11:30pm. 

My personal theory is that it's related to an unauthorized washing machine / some sort of machine / a pipe in the wall / or other water fixture -- since the droning is frequently followed by rushing water sound -- not from bathroom area, closer to bedroom hall closet.

Neal Shyam