The sound is partly a signature of the fact that the ball, the bat hit the ball with high speed on the sweet spot of a bat. When you're off the sweet spot, the sound is really is different because of that vibration. It gets sound low, lower frequency sound. See this crack that you hear, has to do with the collision time. But collision time between the ball and the bat is something like a thousand of a second.
Gary O’Reilly and Chuck Nice learn why it’s so hard to hit one out of the park, Guests: Geoff Blum, the Chicago White Sox legend and announcer for the Houston Astros, and Alan M. Nathan, Professor Emeritus of Physics.
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