I can't recall if anyone has posted about this type of thing before. I just found out about it because of some ringtone ad that showed up while I was looking through a tech blog.

Take a look at this:
http://en.wikipedia.org/wiki/Mosquito_Ringtone
http://www.jetcityorange.com/MosquitoRingtone.html
http://www.nytimes.com/2006/06/12/technolo...&pagewanted=all

Our hearing deterioriates as we get older and we lose hearing in the higher frequency ranges. This is natural, a condition called presbycusis. The human range of hearing is from 20Hz to 20,000 Hz. Exceed this range and we cannot hear anything. Expose yourself to everyday sounds and eventually you'll begin to lose hearing in the upward range.

What's the big idea behind this ringtone? It's a simple 17,000 Hz frequency sound wave. Set it as your ringtone and hope that your teachers can't pick it up. Just thought it was something interesting The idea was originally put to use as "an ultrasonic teenager repellent" "to keep teenagers from congregating outside of shops late at night". Now it has practical application on your phone. Hmm!

i have the ringtone with me.. heheh but never use it. too soft.. or maybe i'm getting old.

This post has been edited by exkay: Sep 22 2006, 01:59 AM

Care to post it up? I'm eager to try it. Is it a MIDI or WAV or MP3 file? If it's MP3, my phone won't play it. I do have a mosquito ringtone, but I think it's not the one that's mentioned here since I can hear it loud and clear. I'm actually quite deaf because I always have to "HAH?" or "Sorry, repeat please?" when people talk to me.

the sound is very irritating.. listen to it for quite a time and cause my head throbbing.. and prove i am still young.. haha!

Yup, make me "sakit telinga"

Hi, anyone here got the formula one ringtone? the sound is start by when the car run on the straight..........

increase the vol the..shrinnggg gets to my ear,testing rite now for the effectiveness

ah..i heard it too before. a low noice high pitch sound. make me feelt uncomfortable hearing that. now i know why sometime i heard like tat sound in restaurant and cafe while other ppl didnt notice it at all.

This post has been edited by genesic: Sep 22 2006, 10:14 AM

where to get it?

mosquito sound very annoying...hate those damn mosquito...tiada aedees tiada denggi

I run the Mosquito program (java), from my laptop to SE phone, no one works. haha..

Check the links that are in post one. I put them there for a reason

I don't think my dog likes the sound. My mom can't pick it up, and I prefer using my phone's vibrator. All in all, it's a neat little idea. Now I'm wondering if there's any software that I can run to generate frequencies to test my hearing.