In the magazine, The Physics Teacher, November 2012, there is an article by Jing Wang and
 Macro Ciocca, Eastern Kentucky University, richmond, KY, that uses Logger Pro to study the coefficient of restitution of a bouncing ball in two very different ways. They use video analysis, deriving the COR from the heights of the bounces, but they also use a microphone and the measured time between bounces to calculate the COR and compare the results.