Definitions for nyquist frequency
nyquist fre·quen·cy

Princeton's WordNetRate this definition:0.0 / 0 votes

1. Nyquist frequencynoun

   (telecommunication) twice the maximum frequency occurring in the transmitted signal

WikipediaRate this definition:0.0 / 0 votes

1. Nyquist frequency

   In signal processing, the Nyquist frequency (or folding frequency), named after Harry Nyquist, is a characteristic of a sampler, which converts a continuous function or signal into a discrete sequence. For a given sampling rate (samples per second), the Nyquist frequency (cycles per second), is the frequency whose cycle-length (or period) is twice the interval between samples, thus 0.5 cycle/sample. For example, audio CDs have a sampling rate of 44100 samples/second. At 0.5 cycle/sample, the corresponding Nyquist frequency is 22050 cycles/second (Hz). Conversely, the Nyquist rate for sampling a 22050 Hz signal is 44100 samples/second.When the highest frequency (bandwidth) of a signal is less than the Nyquist frequency of the sampler, the resulting discrete-time sequence is said to be free of the distortion known as aliasing, and the corresponding sample rate is said to be above the Nyquist rate for that particular signal.In a typical application of sampling, one first chooses the highest frequency to be preserved and recreated, based on the expected content (voice, music, etc.) and desired fidelity. Then one inserts an anti-aliasing filter ahead of the sampler. Its job is to attenuate the frequencies above that limit. Finally, based on the characteristics of the filter, one chooses a sample rate (and corresponding Nyquist frequency) that will provide an acceptably small amount of aliasing. In applications where the sample rate is pre-determined (such as the CD rate), the filter is chosen based on the Nyquist frequency, rather than vice versa.

ChatGPTRate this definition:0.0 / 0 votes

1. nyquist frequency

   The Nyquist frequency, named after Harry Nyquist, is a concept in digital signal processing and telecommunications. It is defined as half of the sampling rate of a signal processing system. It represents the highest frequency that can be accurately sampled without causing aliasing, which is the distortion that occurs when high frequency signals are inaccurately represented as lower frequency signals.

WikidataRate this definition:0.0 / 0 votes

1. Nyquist frequency

   The Nyquist frequency, named after the Swedish-American engineer Harry Nyquist, is ½ of the sampling rate of a discrete signal processing system. It is sometimes known as the folding frequency of a sampling system. An example of folding is depicted in Figure 1, where fs is the sampling rate and 0.5 fs is the corresponding Nyquist frequency. The black dot plotted at 0.6 fs represents the amplitude and frequency of a sinusoidal function whose frequency is 60% of the sample-rate. The other three dots indicate the frequencies and amplitudes of three other sinusoids that would produce the same set of samples as the actual sinusoid that was sampled. The symmetry about 0.5 fs is referred to as folding. The Nyquist frequency should not be confused with the Nyquist rate, which is the minimum sampling rate that satisfies the Nyquist sampling criterion for a given signal or family of signals. The Nyquist rate is twice the maximum component frequency of the function being sampled. For example, the Nyquist rate for the sinusoid at 0.6 fs is 1.2 fs, which means that at the fs rate, it is being undersampled. Thus, Nyquist rate is a property of a continuous-time signal, whereas Nyquist frequency is a property of a discrete-time system.

Matched Categories

1. • Sampling Frequency
   • Telecommunication

How to pronounce nyquist frequency?

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How to say nyquist frequency in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of nyquist frequency in Chaldean Numerology is: 3

2. Pythagorean Numerology

   The numerical value of nyquist frequency in Pythagorean Numerology is: 5

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=nyquist frequency
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Nyquist_Frequency
3. ^ ChatGPT
   https://chat.openai.com
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=nyquist frequency