We noticed a noise that is like a low-frequency hum, or vibration, that began in Ranchlands in July of 2008. We've been living in the neighbourhood since 1998, and in our current house since 2005. Our neighbours to the left and to the right of us have heard the noise, too. All of us have reported the noise to our Alderman's Office.
Sometimes the noise is very loud, sometimes it's soft, and sometimes it's completely inaudible. It's been loud enough to drive us out of the house and keep ourselves and visitors awake at night.
Suggestions have been made that this noise is similar to the "Taos Hum": a hum sound that is indeterminate. Anything is being considered as a possibility. However, the noise seems localized to the location of our house and our neighbour's houses on either side of us. Across the street, in our neighbour's house, there is no humming/vibrational noise. Articles on the "Taos Hum" and similar phenomenon seem to suggest that in those instances, the noise is noticed in a broader area than ours. But, anything is certainly possible.