7

Question 1

Define Nyquist rate?

Answer 1

-Refers to the sampling rate you need to use to prevent aliasing

Question 2

Define Nyquist frequency?

Answer 2

-Refers to the max frequency you can represent given a particular sampling rate

Question 3

How should we approach this question (x*[-n] + x[n])/2?

Answer 3

We are going to get Re{X(e^(jw))}

Question 4

What happens to the exponents when when add or subtract?

Answer 4

The exponents don’t add or subtract

Question 5

X (ej Ω ) is purely imaginary

Answer 5

If x[n] is odd, X(ejω) is purely imaginary.

Question 6

ejkΩX(ejΩ) is purely real for some integer k

Answer 6

If x[n] is even, X(ejω) is purely real.