01-12-2014, 06:45 AM
Cool. Truth is I consciously hear the ultrasonic at 33% volume on my iPhone's headphones with eyes open, and at 25% if I close my eyes and tune in for a few seconds. I actually asked somebody to turn the ultrasonic on and off without looking, and I'd tell them precisely what they would do.
So I'm a weirdo . Yeey!
So I'm a weirdo . Yeey!