Statistical Digital Signal Processing Interview Questions and Answers: 1. What is an ergodic process? Ans. A stationary random process {Xn} is said to be ergodic, with probability 1, if all the statistical averages can be…
Multirate Digital Signal Processing Interview Questions and Answers: 1. What is multirate signal processing? Ans. The theory of processing signals at different sampling rates is called multirate signal processing. 2. Define down sampling Ans. Down…
Finite Word Length Effects in Digital Filters Interview Questions and Answers: 1. What are the different types of arithmetic in digital systems? Ans. There are three types of arithmetic used in digital systems Fixed point…
Finite Impulse Response Filters Interview Questions and Answers: 1. What are the different types of filters based on impulse response? Ans. Based on impulse response the filters are of two types 1. IIR filter 2.…
Infinite Impulse Response Filters Interview Questions and Answers: 1. Give any two properties of Butterworth lowpass filters Ans. The magnitude response of the Butterworth filter decreases monotonically as the frequency Ω increases from 0 to…
Fast Fourier Transform Interview Questions and Answers: 1. Why FFT is needed? Ans. The direct evaluation of DFT using the formula requires N2 complex multiplications and N(N - 1) complex additions. Thus for reasonably large…
Discrete Fourier Transform Interview Questions and Answers: 1. What is zero padding? What are its uses? Ans. Let the sequence x(n) has a length L. If we want to find the N-point DFT (N >…
Z Transform Interview Questions and Answers: 1. Define the z-transform. Ans. The z-transform of a discrete-time signal x(n) is defined as where z is a complex variable. In polar form z can be expressed as…
Discrete Time Signals and Linear Systems Interview Questions and Answers: 1. What do you understand by the terms: signal and signal processing? Ans. Signal: A signal is defined as any physical quantity that varies with…