The Mosquito Ring Tone

"Times published a story on the Mosquito Ringtone (also known as Teen Buzz) this morning. Allegedly inaudible to adults, this 17Khz ringtone has become popular among teens looking to be able to send and receive text messages surreptitiously in class. They even included a sample of the ringtone, so you could determine for yourself whether it’s audible or not. "

The Mosquito Ring Tone: This Adult Can Hear It! — Alec Saunders .LOG

I doubt very seriously that Papa Rooster could hear this, since he fails his hearing test every year at work (he can't hear high-pitched tones). You would think that would be the reason why he doesn't hear me half the time, but my voice is not that high. I think this problem would be called "selective hearing". Anyway, I can hear this, can you?