Dozens of people will be exposed to an "inaudible sound" in their bedroom for six months as part of a novel wind farm health study.

Others will be exposed to the infrasound that emanates from turbines, loud traffic noise and silence over three-day periods in a purpose-built laboratory. Infrasound refers to very-low sound frequency waves that can’t be heard by humans. The two studies will be led by the Woolcock Institute of Medical Research in…