Can You Hear This?
So some people at a university figured out a way to have an "unheard" ring tone. It's a really high frequency that they say adults over the age of 40 are unable to hear. So here it is, I want you to leave a comment telling me if you were able to hear it or not. I can hear it.
I could barely. It's just a high pitch noise.
Kevin
I can't hear it but I can feel it. Like a pressure in the ears.
Grandpa