Diamonddavej wrote:
I visited a row of houses in 1994, I was working at leafleting letter boxes with astronomy society info. The sound drove me mad, it was a terrible nauseating hum, made me feel sick.
The terrible low hum was at every house, almost infrasonic (sub 10Hz). Each house has a gas meter outside - it was coming from the gas meter.
Coincidentally that same month, I saw a news program about low hum annoying some sensitive residence of an estate in the UK, it was traced back to the gas supply. A new gas pumping station nearby created a very low frequency hum in the gas supply leading into the houses.
Interestingly, the person I was leafleting with could not hear the hum.
thats actually really interesting.