- A digital filter has the difference equation
š¦(š) = 1.349š¦(š ā 1) ā 0.514š¦(š ā 2) + 0.0413š„(š) + 0.0825š„(š ā 1) + 0.0413š„(š ā 2)
- Draw the block diagram of the filter
Use the sampling time Tš = 0.02
- Draw a Bode graph and describe from the graph the type of filter in question. How much are the frequencies 1 š»š§, 5 š»š§ and 20 š»š§ attenuated on a linear scale (amplitude decrease)?
- Draw a graph with input signal and filtered signal as the input signal is an edge wave with a frequency of 1 Hz