Chapter 3 / 3.8 / 3.8.3

3.8.3 What Is The Nyquist Sampling Rate?

Explore the sampling rule that makes digital representation of analog signals possible. Learn why a signal must be sampled at least twice its highest frequency component and how aliasing occurs when this condition is not met.

1. Why Must Analog Signals Be Sampled?
2. What Is the Nyquist Sampling Theorem?
3. What Is the Nyquist Rate?
4. Why Is the Sampling Rate Twice the Highest Frequency?
5. What Is a Band-Limited Signal?
6. What Is Aliasing?
7. How Does Aliasing Occur?
8. What Is an Anti-Aliasing Filter?
9. Why Is Telephone Speech Sampled at 8 kHz?
10. Why Is Audio Often Sampled at 44.1 kHz?
11. Does Sampling Faster Always Improve Quality?
12. What Is Oversampling?
13. How Is the Original Signal Reconstructed?
14. Does the Nyquist Theorem Apply to Images and Video?
15. Why Is the Nyquist Sampling Theorem Important?

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