Ok, perhaps you are hearing a cacophony of other insects, or your hearing is different than mine.

Yes, I am a bitch but that is neither here nor there, but I can clearly hear a wave pattern with the chirps as I sit outside on my front porch, and I already knew about this cool way to measure the temperature in Fahrenheit… (I didn’t remember the number you had to add) …..obviously, we already know whether we are too hot or too cold without knowing the exact temperature though… it’s just a fun factoid when you’re camping

Also if you make a loud bang or a loud noise you can interrupt the chirping but they will continue… I don’t really know if grasshoppers have ears though, would be pretty dumb if they didn’t considering all the chirping they do

I believe I read or saw in a nature program though that they all chirp together like that to help deter predators from finding any one chirper…