http://www.npr.org/templates/story/story.php?storyId=5434687 Inventor Howard Stapleton, creator of the Mosquito teen repellent, says only a few people over age 30 can hear the Mosquito's sound.
lazylad wrote: check this site out.http://www.ochenk.com/entry.php?id=63
LoLth wrote: annoying and I would say quite painful if you listened too long. Hope no scumbag decides to play this non-stop on a crowded bus. How long before we have advertisements that parents cant hear? " hey kids, dont you want a Furby? if mommy says no, ask daddy, if he says no then they dont love you anymore" or worse, TV with completely different dialogue for kids and grownups
DonkeyStyle \o/ wrote: I could hear up to 20,000Hz ... but then I blame my speakers frequency response for anything beyond that
Dun laoire wrote: I heard it. While we are on the subject is it just me or can any of you tell if a tv is on even if your not in the room and it's muted? Example. I came home from the pub the other night (not drunk) i could hear my tv upstairs in my room. Now it was on AV1 and it was muted but i could hear the same sort of sound as the one the op posted.
matu wrote: Yep i get this too maybe we have super powers and our role in life is to fight energy crime and go around to peoples houses and switch any electrical goods they have on off.... well that is when they arent in, not using them or just being plain lazy. Dun laoire join me in the Bat cave and we will ask the computer where the first crime is. ( cue music)
Dun laoire wrote: I heard it. While we are on the subject is it just me or can any of you tell if a tv is on even if your not in the room and it's muted?
sock puppet wrote: I can hear it. Its pretty painful.