By Vurdlak on May 24, 2006, with 266 Comments
Woow!!! This has to be the coolest audio illusion of all times! Apparently, using the Mosquito device, UK pupils have recorded the ultra-high sound that is audible only to under-20-year-olds. Your hearing gets progressively worse around the age of 20, so if you play a sound on the edge of your hearing spectrum, unless you have perfect hearing, you won’t be able to hear it at all. As I understood, the audio file is somewhere between 18KHz – 20KHz. When I played it, I haven’t heard anything, and thought it was just another internet hoax, but then my 14 year old brother started yelling at me, to lower that sound cause it’s driving him crazy – and he was in lower apartment!! Another thing.. my dog also flipped out! Here is the audio file. Check it out and report your findings!
This effect works best if you put on your head-phones. If the player below doesn’t work for you, download the Mosquito High Freq mp3.
1. Use your headphones if you don’t hear it the first time.
2. Test this mp3 file on your little brother, sister or a dog.
3. Be carefull not to drive someone crazy with this.
4. Test Your hearing here.






(41 votes)
that is one annoying frequency…
and it gives me a real terrible headache
even i didn’t wear the headset (though i put it on to my laptop), and i can hear it over like 1% from the headset
I am 23 and i can hear it. It is very annoying…
26 – can’t hear anything….
EWWWWWW I hate mosquitoes >:(
i can hear the sound and i am over 20 year old…it hurt my ears…
I am 24 and I could hear it…..pretty annoying!!!
The tone is only 15kHz and I could easily hear it and I’m nearly 60 years old. It’s close to the 15.625kHz I can hear on old CRT color TV’s. Until I was in my 30′s ultrasonic alarms and some dog whistles would drive me nuts. When I was a child if I went into a store with an ultrasonic alarms I’d throw a tantrum. It was years later, when I passed less than a foot away from an ultrasonic dome radiator I finally realized was happening. The sound nearly knocked me over. It seems that even while the alarm sensor was only on when the sores were closed, they left the radiators running 24/7.
37 and I can hear it.
22. Heard it just fine. In fact, my ears are still ringing.
Wow quite amazing me and my sister can hear it loud and clear but my parents can’t hear a thing!
Okay, I’m a fifty year old music producer who has attended more loud concerts than I can remember and I can hear it above the ringing that already exists in my ears from years ago.
I actually played it a couple of times for good measure to make sure that the sound didn’t change. It didn’t.
Am I the only one who ‘didn’t’ find it annoying though? It just sounded like a low audio tone to me.
I hope this means my ears will hold up ANOTHER 10 or twenty years.
:-)
wow…. im 23 and i hear it perfectly. to be honest. i hear that noise on a daily basis… wonder if that’s what it is???
amanda wow daily basis. . .
oh shit that not cool annoying lol but good tho
woowwww annoying
Gosh, that’s annoying!
Nearly 35 years old and I can hear it. O.o
That’s one annoying sound.