• Dr. Bob Grober, 46, designed the "tempo tuner" that helped Vijay Singh win the FedEx Cup
"The human ear is wonderful at pattern recognition, and that can be the secret to creating a smooth, repetitive swing. My Sonic Golf System-1 works on that principle by turning your swing into sound. The more rhythmic your tone, the more rhythmic your swing. Here's how it works: Sensors in the shaft insert measure your club speed throughout your swing, 400 times per second. Those sensors then talk to a microprocessor that converts the measurements into audio, which you hear through a headset. When your swing speed is slow, the corresponding sound is low and soft; when it is fast, the sound is high and loud. It's useful for all levels of golfers. Novices, for example, can focus on grooving a smooth, uniform swing speed; better golfers will want to ensure that their top speed occurs at impact; and Tour pros, like Vijay, can analyze the transition between their backswing and downswing by listening for a brief pause in the tone. When a respected player comes up to me and asks how quickly I can get him a system ... man, that's cool." See a demo at sonicgolf.com
Grober is the Frederick Phineas Rose Professor of Applied Physics at Yale University in New Haven, Conn.
Credit: Justin Steele
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