25-10-2017, 11:09 AM
Some questions are given below:
1. Define discrete time and digital signal.
The discrete time signal is continuous in amplitude and discrete in time, where the digital signal is discrete in time and amplitude.
2. Briefly explain the various methods for representing the discrete time signal
Graphic, Tabular, Sequence, Functional Representation
3 Define sampling and aliasing.
The conversion of a continuous time signal into discrete time signal is called Sampling. Aliasing is an effect that causes different signals to become indistinguishable.
4. What is the Nyquist rate?
It is the sampling frequency that is equal to twice the continuous time signal to be sampled.
5. State Sampling Theorem.
It states that, in order to reconstruct the continuous time signal from its discrete time signal, the sampling frequency must be more than twice the continuous time signal frequency.