The sound of mechanical ventilation in a bathroom. Can be used as roomtone etc. Mkh60/cad m179 (figure 8) ->uln-2. Http://www. Reuven. Nl/?page_id=106.
Recorded using jez riley french contact microphones, on a windy day on the south coast of england. I connected a pair of contact microphones to different parts of a metal fence and let the wind do the rest. Starts off gently and gradually the intensity increases as the wind picks up. You can hear the fence rattling and a ambient drone of the wind blowing.