Ringtones used for covert communication

Lachlan Grant19 June 2006, 6:58 AM

Next time an annoying teenager approaches you, turn your phone towards them and activate the mosquito. However, if you are over 25, beware: teenagers may turn it against you.


The Mosquito Last year, a UK security company announced their revolutionary teenage deterrent product, the Mosquito (pictured). It's a sounder unit that emits a very high (ultra-sonic) tone that statistically, people over the age of 25 cannot hear.

It relies on presbycusis, the loss of hearing that gradually occurs in most individuals as they grow older. The device is designed to allow shopkeepers to get rid of “surly youths” who loiter and at the same time without distracting potential customers.

The product’s website boasts feedback stating astounding success, and that it managed to “chase away annoying teenagers who gather on street corners, on shopping parades and in other problem areas”.

However, tech-savvy students have managed to record the tone that the Mosquito emits and have turned it into an alert tone on their mobile phones.

They then use the tone to notify them of new text messages they receive in class, where adult teachers can’t hear it. This is especially useful for students in schools where mobile phone use during class has been banned.

The ring tone has been named “Teen Buzz” and is already available freely over the web at the following sites:

Put a decent ringtone on your phone

Of course, if the idea of a high pitched squeal coming from your mobile doesn't appeal, why not use your own MP3s as ringtones?

There are dedicated tools that automate the process of cutting full songs down to an appropriate ring-tone length, saving in MP3 format and uploading to your phone.

CoolRinger is one freeware app that's certified free of spyware, adware and viruses by Softpedia. So basically, this thing doesn't load any crap onto your PC, unlike most of the "free ringtone" software you'll find with a quick online search.

CoolRinger automatically finds the chorus section of your song and crops to that, or alternatively you can select which section of the song to use. If your phone has a memory card and your PC has a card reader, then that's the easiest way to put a ringtone on your phone, but if not, there are instructions on how to upload the ringtone to your phone, too.


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David Emberton:

Nice post! It's hilarious that phones can even reproduce the sound though... most MP3 ringtones I've ever heard sound like alfoil crinkling underwater. btw, if you want to see an experiment in ringtone sales, check out http://www.pepsismash.com/, it's worth a laugh also (especially the M.C. section).

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Wil:

Hey I can still hear this, sob - I CAN dammit! I can! : )
Thanks for the CoolRinger tip - I've been wondering if any of these are spyware free.

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Drew Higgins:

Nice! Tested it out and no teacher could hear it. Thanks!

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

jail:

I'm 36 now + I can hear it - painfull
Might burn it to disk and play it at each birthday as a test :)

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

jay gravina:

Unbelievable, I downloaded the wav file and played it on the PC without telling my teenage kids in the room. I couldn't hear it (I'm 39) and they could and they asked me to turn down the annoying high pitched whine!It actually works, LOL. Now to find a decent use for it.

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

DavidF:

FWIW, I'm in mid-40s and can still hear this high-pitched tone as it carves a path right through my eardrums. I also tested it on my cat (she is three years old, which is around mid-20s in human years) and she didn't like it much either. Looks like none of us will be visiting shops which play this tone any time soon...

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

dianne:

I am 47, female and can only hear it with speakers at full volume. Will try on teenage kids when i get home tonight.

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Negative:

Woah, I am 15 and tested it out.

Could just barely hear it but i'm pretty sure my amp was trying to weaken the frequency.

I would think you'd need a high-end phone to play it at the right frequency. :(

*looks at nokia 3650 and crys*

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Aaron:

This should also serve as a good example for the over-20's crowd that spends big bucks on audiophile stereo systems. :) If you can't hear 17kHz, you don't need a system that can accurately reproduce frequencies over 20kHz (which is supposedly the upper range of human hearing, but that doesn't stop the audio people from trying to sell gear that goes higher than that).

FWIW, I'm 31 and male and could hear it (as well as my own tests at 18kHz - 20kHz), but my father in his 60's couldn't - even turned up as loud as my 1000W recording studio monitors could handle. I'm sure the bats in the backyard were going nuts though!

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

thromy:

I tried the file at www.ringrong.com

I could not hear it but my wife could at high volume

my kids could hear it at a very low volume

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Chetan:

Listening to that sound for prolonged periods can make you go mad and deaf...some student had that on for like the whole day at class, and everyone got extremely pissed :P

My mother is like 44 year old, and she could hear it, while my dad (45) couldn't :P

Also it makes my neighbour's dog go mad!!

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Jas:

Oh thank god I can hear it!!
Hehehe, now to test on wife and kids


Male, 36 :)

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Timbob:

Yeah I cn hear that, even through my nearly constant tinitus.. Thats a nasty little frequency that. Drills straight into your brain. Cat hated it though.

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

Stevo:

Cool - 46 and can still the sound. Not much use as a ringtone though - I'm sure my Nokia is not a high end audio device.

29 February 2008, 8:28 PM (2 years ago)report abuse Send to a friend reply

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