I am curious

[Back In The Saddle]

Originally posted by Drizzle
Fox 40s are pealess but are very loud -- however because of its design there is no detectable vibration. Although it's faint, a vibration emits from a pea whistle, which deaf kids are much more likely to pick up.
I am just speculating though, correct me if I'm wrong.

I think your speculation is interesting. But I can't imagine how vibrations from a cork pea that weighs much less than an ounce can possibly be felt by anybody else. I can't feel it when I blow it. Unless you're suggesting that they can be felt in the air, the only other possibility would be the vibration traveling through the official's body, down through their rubber-soled shoes, through the hardword, through the player's rubber-soled shoes and into their body to be felt. That seems pretty unlikely to me.

On the other hand, I've often wondered if the Fox's three-chamber design was an attempt to imitate the sound of the pea whistle by using three dissonant frequencies.