so this Mosquito alarm thing is the alarm they have installed around malls and stuff to stop teens from loitering and all. but not people have been getting it on their phones and suff, so it has like just become like a big deal around where i live, so i was looking it up and i played an mp3 of it and my mom could hear it! like shes in her 40s.. was it not the real thing or does she just have really good ears..? haha. i dunno! but if you guys know of a link to the real thing then i would love to have it. thanks!
2007-10-13 04:44:46 · 1 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Your mom has good hearing.
Humans have a hearing frequency range from 20Hz to 20000Hz. Some people have exceptional hearing and may even be able to hear still higher frequencies upwards of 22Khz (22000Hz)
As people age and are exposed to noise levels and loud music etc, hearing loss ocurrs. Typically the high frequencies are the first to go.
So the idea behind the mosquito alarm is that most older people have some hearing loss and can't hear it. However for those people who have taken care of their hearing or had exceptional hearing to start with will certainly be able to hear these high frequencies.
2007-10-13 15:48:25 · answer #1 · answered by MarkG 7 · 0⤊ 0⤋