I was very surprised. I could here right up to 18,000 Hz. I had a drop in volume at 8,000, then 9,000, 10,000, and 11,000 were quite audible still. 12,000-18,000 were increasingly quiet, then 19,000 and 20,000- nothing.
No it isn't scientific, because it doesn't control for bone conduction, no sound proof room, etc. I've had my hearing test a gizzillion times and the graph they show me of my hearing loss follows a similar patter as I found on this. But I agree I wouldn't freak out from the outcome of this test, but it may help someone notice a hearing problem early to get tested and address it. Females can hear higher frequency sounds than men-as I recollect??- so it would be interesting for some females to take the test and speak up.
No tickling, but rather acute discomfort afterwards. Below 12,000, I had to turn the volume way down. The sounds were painful and left a lasting ringing in my ears.Did anyone else's ears tickle as it got around 10 kHz? I couldn't hear anything past 15 kHz.