This is the ambient noise from our front porch this morning. An oil rig started operating maybe a mile to the north of our house. Recorded with the voice memo app on my iphone

low drone of an oil rig

In this recording you can hear my office clock ticking and in the background a whimpering squeak being caused by the wind.  I have no idea what's making the noise, it happens every time we get a good north wind. 

The mysterious squeaking sound

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