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fsonnichsen
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Can anyone tell me the definition of a "Nyquist" with respect to units of frequency? I didn't find it defined on the web. I presume it is some measure of cycles/sample or similar
Thanks
Fritz
Thanks
Fritz
It isn't. But I can see that a creative author might decide he can use it as a measure of the ratio of two frequencies.fsonnichsen said:Can anyone tell me the definition of a "Nyquist" with respect to units of frequency?
A Nyquist is a term used in the field of signal processing to refer to the maximum frequency that can be accurately sampled or measured in a given system. It is named after the Swedish-American engineer Harry Nyquist.
Nyquist is important because it helps determine the sampling rate needed to accurately represent a signal. If the Nyquist frequency is not taken into account, it can lead to aliasing, which is a distortion of the original signal.
The Nyquist frequency is a key component of the sampling theorem, which states that in order to accurately represent a signal, the sampling rate must be at least twice the highest frequency present in the signal. This ensures that the original signal can be reconstructed without distortion.
If the Nyquist frequency is exceeded, aliasing occurs, which means that higher frequency components of the signal are incorrectly represented as lower frequencies. This can result in distorted or inaccurate data.
Nyquist is used in a variety of real-world applications, including audio and video processing, wireless communication, and medical imaging. It is a fundamental concept in signal processing and is crucial for accurately capturing and analyzing signals in these and many other fields.