Ultrasonic Face
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Can human beings make ultrasonic sounds? (with vocal cords)?
I had the idea that perhaps there is a way to emit such sounds by straining the vocal cords as to make a high pitch whining sound, and then pushing a bit further up. You arrive to a point where there is no audible sound, but the air is still passing through. I had the impression I was producing ultrasonic sounds when I saw the reaction of my cat. (or was he just reacting to the flushing expression on my face?)
interesting observations....a very good question indeed...but to strain the vocal chords to such an extent is in the "impossible" catagory for average humans...but in the world there is probably someone who can do it...maybe that someone is you!
