Whir or buzz?

In order for a baseball to whiz or buzz in the air does it have to be a certain velocity or does it just depend on how tight the rotation is?

It’s velocity, but it’s also grip and wrist flick. A four seamer will give you that “pfffft” sound better than a two seamer. The harder you throw, the greater the likelihood you’ll hear it, too.

thanks for the answer. My friend and I were at a game and were watching the pitchers warming up just to hear the pfffffffffff of the fastball and each time we were like oooooh yeah. Nothing sounds better than that.

mine sorta whistles :S

not quite but sorta