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Introduction to Sampling Theorem Video Lecture | Signals and Systems - Electrical Engineering (EE)

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1. What is the Sampling Theorem?
Ans. The Sampling Theorem, also known as the Nyquist-Shannon Sampling Theorem, states that in order to accurately reconstruct a continuous signal from its samples, the sampling frequency must be greater than twice the highest frequency component present in the signal.
2. Why is the Sampling Theorem important in signal processing?
Ans. The Sampling Theorem is crucial in signal processing as it provides a guideline for determining the minimum sampling rate required to accurately capture and reconstruct a continuous signal. It ensures that no information is lost during the sampling process.
3. How is the Sampling Theorem related to the digital representation of analog signals?
Ans. The Sampling Theorem is directly related to the digital representation of analog signals. By sampling an analog signal at regular intervals and converting the samples into a digital format, the original analog signal can be accurately represented, stored, and processed digitally.
4. Can the Sampling Theorem be violated?
Ans. Yes, the Sampling Theorem can be violated. If the sampling frequency is not at least twice the highest frequency component of the signal, a phenomenon called aliasing occurs. This results in the distortion and loss of information in the reconstructed signal.
5. What are the practical applications of the Sampling Theorem?
Ans. The Sampling Theorem has numerous practical applications in various fields. It is used in audio and video signal processing, telecommunications, medical imaging, radar systems, and many other areas where analog signals need to be accurately converted and processed digitally.
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