Step 1: Not Hard At All!
The Concept is simple, as you get older, the less higher frequencies you can hear. But when you were younger you could here much higher frequencies then you can hear as you get older. So using a freeware program NCH Tone/Waveform Generator,
you can create higher frequencies that only younger people can hear.
Step 2: *Old Version*
Using this program is strangly easy. First, find a frequency thats just over your hearing range. You can do this by clicking the up and down buttons next to the HZ sign, then clicking the start button. Once you found a frequency you can barrely hear, click the save as button and save it as whaterver you want.
Step 3: Start Annoying!
PS Some Speakers can't haandle the higher freqincies, smaller is better!
Step 4: *Updated For New Program!*
1)When you open up the program you will see this screen, double click the "Sine One Frequency"
2)It will pop up with a new box that says "1000 HZ" Chane that to anything you want (I don't recommend anything above 20000)
3)Play it to test, Save it, And viola! A beautify created anoy-a-tron!