What is the Nyquist criteria?
Understand the Problem
The question is asking about the Nyquist criteria, which is related to signal processing and sampling theory. This criterion helps determine the conditions under which a signal can be accurately reconstructed from its samples.
Answer
The Nyquist criterion requires the sampling frequency to be at least twice the highest frequency of the signal to avoid losing information or aliasing.
The Nyquist criterion requires that the sampling frequency be at least twice the highest frequency contained in the signal. If the sampling frequency is less, it may lead to aliasing, where different signals become indistinguishable.
Answer for screen readers
The Nyquist criterion requires that the sampling frequency be at least twice the highest frequency contained in the signal. If the sampling frequency is less, it may lead to aliasing, where different signals become indistinguishable.
More Information
This principle is fundamental in digital signal processing and ensures accurate digital representation of analog signals.
Tips
Common mistakes include misunderstanding that it's not just about any frequency but the highest frequency in the signal, and not recognizing the consequences of aliasing.
Sources
- What is the Nyquist theorem? - TechTarget - techtarget.com
- Nyquist Criterion - an overview | ScienceDirect Topics - sciencedirect.com
- Nyquist Sampling Theorem - Statement, Working, Aliasing ... - geeksforgeeks.org
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