Quote Originally Posted by foxtrot View Post
It would have to be consistent hardware (brand/model of speakers) but most people don't comprehend both words simultaneously even if they are capable. So while "good" ears would hear both the low and the higher frequencies, their $#$#ing brain would filter out the lower word, and they wouldn't have anything to defer to. So while capable of hearing both, they only understand and can say the upper frequency "Yanni" or they have to pretend they can't hear anything, at which the audio tester can crank it up to 120 db and note their flinching. This is much the same reason why the wives think people are crazy for hearing "Laurel", when in fact they hear both.

But, based on the sheer randomness people are experiencing, it may not work. Still... an interesting one to test. Just not me!
But isn't volume going to affect ability to hear a frequency? It's been a while since I did a hearing test, but I seem to recall varying volume levels of the same tones.