Lec3: FIR filter responce

Question 1

FIR filter equation?

Answer 1

Question 2

The frequency response of the general FIR filter is?

Answer 2

Question 3

How is the frequency response of a FIR filter calculated?

Answer 3

In order to find the general frequency response, we start by applying our general FIR filter equation to a discrete time sampled complex sinusoid:

Question 4

What aspects of a input are changed as a result of passing through a filter

Answer 4

Answer 5

We can use the linearity of the FIR filter to compute the output to a sum of sinusoids, when a real sinusoid passes through an LTI system (such as an FIR filter), the output is also a real sinusoid which has picked up the magnitude and phase of the system.