Digital Signal Processing Questions & Answers

Digital Signal Processing Questions & Answers Aliasing - CORRECT ANSWER - an effect causing different signals to become indistinguishable when sampled Anti-aliasing filter - CORRECT ANSWER - Low-pass filter implemented before sampling to control high frequency components Continuous-time signals - CORRECT ANSWER - Defined with respect time (x) Convolution - CORRECT ANSWER - input signal * impulse response = output signal Delta function / Unit impulse - CORRECT ANSWER - Normalised input - sample number = 0 (n=0) at value of 1, all other values are 0 Discrete-time signal - CORRECT ANSWER - Defined with respect to samples [x] Finite Impulse Response (FIR) - CORRECT ANSWER - z^-1 = unit delay/tap = x[n-1] moving average, median filter FIR filter properties - CORRECT ANSWER - inherently stable requires no feedback can give linear phase response more computational power required