red_ryder 0 Report post Posted March 15, 2005 Any medical folks around? I was wondering...there are sound frequencies which the human ear cannot hear such as ultrasound. So if we can't hear the sound, does it mean that it can't damage our ears? What if the magnitude or power is very great? Would that damage our ear drums? The reason I'm asking is because I am considering installing ultrasound bird repellers on my window to scare off birds who keep trying to roost on my aircon. According to the website that is selling them, they fire off a powerful blast of ultrasound to scare birds away. As this is the window where my daughter sleeps under, I'm worried about ear damage. Share this post Link to post Share on other sites
Q00 0 Report post Posted March 15, 2005 im sure that as long as its pointed away from your daughter its safe. Share this post Link to post Share on other sites
heady 0 Report post Posted March 15, 2005 Hi red, I am not a doctor but have some medical background. As a parent, I wouldn't do it, as sometimes one won't know if there is any harmful effects until a long time later. However, if the window is closed, it may be harmless as high frequency sound don't travel far nor thru solid materials well, unlike low frequency sounds. Does the gadget really works? In NS, there are people who buys the little gadget for repelling mosquito using ultrasound too. Doesn't work at all!! Share this post Link to post Share on other sites
