DK if I can describe it accurately but I like a medium pitch that I can change either by moving to the outside edge or closer to the middle and/or striker material. I don't care for high pitch, I like a clean rasp rather than a deep rattling rasp. I also want one to say "I'm such a lonely hen". I built two mahagonys that work that way and when my buddy is in the distance, I question wether it is him actually calling. It doesn't sound as good when you are running it, but from a distance, it is the real thing. Opening morning I texted him and asked if a hen had come in on top of him. The old tom would only march up and down the hollow so far but gobble every time to his calling. Slate over Glass. Two days later, I pulled in a hen and talked with her for 20 minutes while she circled us, desperately wanting to hook up with another hen. She actually gobbled 3 times. I though she was a jake at first. I probably limit my success but I am really stuck on that lonesome hen sound.