The Controversial Sound Only 2% of People Hear [video]

I worked in an office that had floor to ceiling windows, and a when a construction project started down the street there was some equipment they'd occasionally run that produced infrasound matching the resonance of my office. When it was running, being in the office felt similar to the beating that sometimes happens when driving on the freeway with a car window open, but without the wind and much stronger. It was impossible to get any work done while that happened, but fortunately it wasn't very often.