It sounds a bit like a vocal Necker cube illusion. (I.e. I find myself swapping between either male or female depending on how I am listening to it.) It's a bit

It sounds a bit like a vocal Necker cube illusion. (I.e. I find myself swapping between either male or female depending on how I am listening to it.) It's a bit like the Yanny/Laurel thing for me where I hear both.