Question

You are designing a system that records electrocardiogram (ECG) signals. You decide that for this application the highest relevant frequency in the signal is 20 Hz. is the longest sampling period T you could use wh recording the signal with sufficient accuracy? (b) Assume you do not have an ideal anti-aliasing filter. Instead you have only a first-order system. You design the system so that its cutoff frequency is 20 Hz. Draw the Bode magnitude plot for this non-ideal anti-aliasing filter (the straight line approximation is fine). Express your frequencies in hertz. (c) You decide that a gain of -60 dB or lower will yield acceptable amounts of aliasing. Using the non-ideal anti- aliasing filter from above, what is the longest sampling period T you can use to reduce aliasing to acceptable levels?

Answer 1