This project will give you some experience with the concept of interpolation by investigating various interpolation schemes and their effects on the interpolated signal.
Exercises Let .
Generate a sequence that is a sampled version of with a sampling period and a length of 1024. Expand to by a factor of 4. Verify with filter that the output is a zero-order hold version of . Plot the frequency response of the zero-order hold filter using freqz , and use this to explain the relationship between and . Use this to determine a causal difference equation by first delaying the impulse response to make it causal and then converting it to a difference equation.