Just as above, should I? I just bought new headset 20Hz-20kHz range and I played ultrasonic to test it and I heard it, so does it mean this headset it not good enough for it?
For me it sounds like you have got a pretty good high frequency hearing.
I can hear the ultrasonic track if I have the volume to high. It's not something you need to worry about though. If you can't consciously make out what being said then you are fine.
Okay than, thanks. I just though only very young children can hear such high frequencies.
small statured persons, including petite people and children, often can hear ultrasonics as a function of their smaller eardrums. Some others can also hear them, although it is unusual. But it is not unheard of.