highwaystar101 on 23 May 2012
I could hear all of them until 17.4 kHz, which apparently you can only hear if you're under 24. I turn 25 in 2 days, so I'm not too upset about that one.
*However* I was sceptical, so I generated some sounds using my computer to see at what frequency I couldn't hear it any more. 18.5 kHz is the point that I can no longer hear it, not 17.4 kHz. So I doubt the video is outputting the frequency it claims.
