One of the biggest problems I faced for recording at my old place was hum from a treatment plant that was across the creek.  Sometimes it was not heard but other times it was terrible. I recorded the following clip on the 13th of November of 2006.

Although this sound clip is not of very good quality it does show several things. This was at about 2 a.m. in a rural setting, so I know that no one was down in my woods. We also did not have any small dogs so I think the barking sounds are not of a dog. However the pattern of the barks does seem to resemble how my own dog barks, not the sounds but just the pattern.

Click here to listen to sound clip:   Chatter 1

Waveform View

Spectral View