Dingmans' Vocab List

Question 1

Shift phase by 180 (deg)

Answer 1

180 degree per filter order.

Question 2

Linear phase

Answer 2

the condition where the phase response of the filter is a linear (straight-line) function of frequency (excluding phase wraps at +/- 180 degrees). This results in the delay through the filter being the same at all frequencies. Therefore, the filter does not cause “phase distortion” or “delay distortion”. The lack of phase/delay distortion can be a critical advantage of FIR filters over IIR and analog filters in certain systems, for example, in digital data modems.

Question 3

CONV

Answer 3

Convolution relates the three signals of interest: the input signal, the output signal, and the impulse response.

Question 4

Numerator

Answer 4

Specify the numerator coefficients as a real or complex numeric row vector. The default is [1 1].

Question 5

Denominator

Answer 5

Specify the denominator coefficients as a real or complex numeric row vector. The default value of this property is [1 0.1]

Question 6

Exponent of Z

Answer 6

The Fourier transform has a negative sign to intentionally rotate in the opposite direction as the frequencies that they are “looking” for.

Question 7

Rectangular window

Answer 7

involves simply truncating the dataset before and after the window, while not modifying the contents of the window at all. windowing and causes power leakage.