Leaderboard

I found this out when my wife, grandson, his wife, and daughter who lived with me were always angry when we sat in the living room. I discovered that our unused ceiling fan motor was not operating the fan, but was on and grinding at a nearly undetectable in audio. I turned it off and we all just relaxed and the living room became a relaxing area once again.

I dug into my files and found some old research that elaborates on a few animal reactions to naturally occurring infrasound. Explains why no animals died in the 2004 Indian Ocean tsunami. The underlying merit of the paper is safety. Infrasound is difficult to impossible to attenuate. There has been research on reducing wind noise with 8lb polyurethane foam. Perhaps a hat made from 8lb polyurethane foam topped with tin foil 'Devo' style. https://www.ndt.net/article/ultragarsas/Vol.64-No.3-2009_06-Guzas.pdf