Very strange experience

[stonehart]

Well I have just had a very strange experience.
I was just outside having a smoke and I started to here this low oscillating sound that slowly got louder and moved overhead and faded away. We have very low cloud cover here in Christchurch tonight so I could not see anything just hear it. The time was 1:11am NZ time.
Being a sound engineer my ears are extremely good and can tell you that the central node of the sound had to have been a frequency no lower than 30 Hz with a cycle moving up to around 50 Hz. It sounded very much like the low frequency test cycle I use to test the very low sub end of very big concert PA systems.
To be honest I am kind of really creeped out by the whole thing.

I would just like to add this:
The sound pulsed and that is what I mean by oscillating... I also I felt that some of the lower nodes were well out of human hearing range... just like sub base you feel it not hear it. Sub frequencies are not directional but by a strange quirk of evolution we hear low frequencies sound directionally so I had no problem with my ears being able to get a good idea where it was coming from

 

[Facius_Cardan]

That's an interesting experience. It could have been something of tectonic origin or also an occurence in the vein of the Taos Hum (sound of unknown origin heard in locations around the world). I've also read recently that some strange nocturnal lights have been observed down there in New Zealand in the past few days

 

[stonehart]

yeah it was odd as hell... what got me was it was moving and I could follow the sound all the way untill I could no longer hear it.. Trust me I know what the sound of an earthquake is after 3000 after shocks from our 7.1 here in september last year and it was nothing like that.. I am at a loss as to what it was.

Oh I did not add that it moved very slow and took a good 5 min to go away.

 

[pixelsmith]

could be HAARP.

 

[Angel of Ioren]

Could it have been internal? An aural hallucination of some kind. Probably not though.

I was going nuts trying to track down a noise in my house last night. It took me a while figure out that it was a painting on the wall out of position and vibrating because my neighbor was washing something large and the washing machine was shaking.
Phantom noises drive me nuts because you go nuts until you figure out what they are.

 

[stonehart]

wish I could put it down to some thing loike that but I was outside and could tell that it was over head.
All still very odd

 

[alzo]

According to Here...

http://www.geonet.org.nz/earthquake/quakes/recent_quakes.html

Christchurch had a small earthquake a couple of hours later... Wonder if you heard the plates movement building up and echoing off the clouds?

Reference Number: 3441634
NZDT: Wed, Jan 5 2011 3:12 am
Magnitude: 3.5
Depth: 10 km
Details: 10 km south-west of Christchurch

From Here http://www.fujitaresearch.com/reports/earthquakes.html
6. VLF Background Noise

The VAN Technique holds that changes in the earth’s electric field prior to an earthquake. A group of researchers in from Russia and Japan (9) believe that similar changes can be noted in the earth’s background noise in the low (LF), very low (VLF), and extremely low (ELF) frequency bands. The details in print are very few; the authors stated in 1991 that they were on the verge of submitting major papers to various journals, but nothing further was published between 1991 and 1996. Nevertheless the possibility that VLF Noise represents a significant precursor to earthquakes was evaluated by the IASPEI in its most recent meeting (the findings of which appeared in Pure and Applied Geophysics, 1997).

As early as 1985 the research group had established a detection network around Tokyo, consisting of six fixed and three mobile stations. Background noise was measured at three frequencies 82kHz (LF), 1525Hz (VLF) and 36Hz (ELF). Between 1986 and 1991 the group claimed to have observed precursors for 20 earthquakes, but no significant details of these were published in the reviewed paper. As a result, the IASPEI reviewed earlier papers by Yoshino’s researchers and also a number by Dr. Gokhberg and his Russian team (10) who reported similar measurements of increased LF, VLF, and ELF noise prior to earthquakes.

The conclusions of the IASPEI were cautious. They were not convinced that a mechanism existed for the transmission of signals from the great depths of the earthquakes (ca. 480 km) which Yoshino claimed generated the signals. Also, there was some confusion about exactly what Yoshino and co-workers were describing as anomalies. Indeed, the panel was more convinced by the observations of Gokhberg and co-workers, who observed three distinct build-ups of noise in the LF (81-82 kHz) prior to three seismic events, after which the observed noise dropped by ca. 10dB. However, even in this case there seem to have been no reported occurrences since late 1981. The panel has not ruled out the possibility that some electromagnetic signals may be noted before earthquakes. Clearly, more research in this field will be necessary in order to assess the value of LF, VLF, and ELF measurements.


Looks like you nailed the Frequency, Spot on.

 

[Sloppy Joe]

Could be any number of things. HAARP. Secret helicopters. Electromagnet experiments. Etc. Who knows. I also have a keen sense of hearing. I hear a good deal of low end frequencies and have a physical sensitivity to them. I'm not fond of high end frequencies though as they end up hurting my right ear fairly easily. I can't hear the low end frequencies as well out of my right ear though. It's mostly my left ear that can do that.

 

[ALPHA ROMEO UNIFORM]

Maybe its combination of mobile phone towers, electronic appliances, power grids
Peace