Hallo evedybody. I'm working with Simulink (discrete time) and I've to derivate a noisy signal. What is the best way to do this? Anyone could suggest me a proper choise for cefficients of a derivative filter? (for example: [z(n) + 3z(n-1) -3z(n-2) -z(n-3)]/(6*h)) Thanks a lot Bye Raffaele |