[shove_it]

Mash this link for THE MUMMMMMMMMM ...

http://www.youtube.com/watch?feature=player_embedded&v=EuRBM0i8mbI

[OpusatFR]

Sounds like my refrigerator.

[FrdmLvr]

Okay, this is weird: I clicked on the youtube video and heard absolutely nothing, but my 24 year old daughter, sitting about 10 feet away said, "Wow! What is that hum?"

She had no idea I played the video. I paused it without saying anything and she said it went away, then clicked on "play" again and she said "There it is again! What is that? Where is that hum coming from?" This is the honest truth.

[FrdmLvr]

My 26 year old son just walked in and I clicked on the video. He noticed it. I still can’t hear it. I’m 59.

[Dr. Pritchett]

Things that make you go Hmmmm....

http://www.youtube.com/watch?v=_Ib5H5auk-c

[TomGuy]

I could hear it.

There were 2 sounds. One was the low hum and the other sort of sounded like distorted telegraph or radio tuner.

[Ditter]

I just listened to the video and I didn’t hear a humming sound. All I heard where clicks or taps, not a continuous sound. I guess my tinnitus blotted it out. :)

[MHGinTN]

I hear three distinct sounds, a low frequency constant hum, a slightly higher pitched constant hum that seems to rise and fall in volume very slightly, and a sound of electrostatic interference like when a speaker gets a secondary vibration that cancels the primary and nets a static sound.

I built my house on land that lays in a valley which has a road running down the middle. The underlying rock is limestone, with caves here and there. I can detect the sound of the tread on tires of a vehicle drumming against the pavement more than a mile away. When more than one vehicle is on the road coming or going from my location, the resonant sound is similar to the deeper droning sound of the example from Taos.