On March 12, 2014 at 22:45, Herman Trivilino said...
So much for that claim that low frequency sounds are non-directional!
The noise itself was generally non-directional, but the ability to hear it in the first place definitely was directional. I remember wandering around the room, trying to pinpoint where it was coming from and finding that very difficult - not because it was everywhere, but because it could only be heard in such a limited area... and when I could hear it, I couldn't tell where it was actually coming from!
The directionality probably had to do with there only being a single wooden door in front of the drive, but a ton of cabinet to the left, at least 5 layers of wood on top, and a wall to the right. Kind of gave me a "cone of annoyance".