Humdronian Speech Exercise

Humdronian Speech Exercise Hi, I have recently discovered the "Valsalva Stuttering Mechanism" theory, and I have been impressed by it. Coming from a Science-background, it helps to learn about stuttering from a physiological view-point. I am planning to integrate some of the Valsalva exercises into a morning routine, but I am not sure if I fully understand the "Humdronian Speech" exercise. Does anyone have any experience with practicing this? Are there any audio examples of how it should sound? Thanks.