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Research engineers at the Georgia Institute of Technology are developing a knee band with microphones and vibration sensors which listens to and measures the sounds inside the joint. Those sounds can be used to determine the type of damage a person may have incurred. Newsday speaks to Professor Omer Inan from the School of Electrical and Computer Engineering at Georgia Tech... (Pic:MEMS microphones and piezoelectric strips pick up sounds of a bending and extending knee Credit: Fitrah Hamid / Georgia Tech)