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Dan, it doesn't sound like a ceiling fan to me. Isolate the breaks between vocal phrases and listen closely. You can see it directly if you pass those sections, looped, through an FFT processor like the free Voxengo SPAN FFT analyzer. You can get it free here: http://www.voxengo.com/product/span/

VERY useful tool for helping with EQ.




I hear it. It is high pitch and does not exactly sound like the fan when I put my ear near it. I do have a mess of wires which I will check. But take a look at this picture and you will understand why my first thoughts were the fan...