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Which is the correct formula for Nyquist sampling?
Nyquist sampling (f) = d/2, where d=the smallest object, or highest frequency, you wish to record. The Nyquist Theorem states that in order to adequately reproduce a signal it should be periodically sampled at a rate that is 2X the highest frequency you wish to record.
How is frequency related to the Nyquist theorem?
The Nyquist Theorem states that in order to adequately reproduce a signal it should be periodically sampled at a rate that is 2X the highest frequency you wish to record. With images, frequency is related to structure size.
Richard E. Thomson, William J. Emery, in Data Analysis Methods in Physical Oceanography (Third Edition), 2014 Sampling time series that has significant variability at the Nyquist frequency affords its own set of problems. Suppose we wish to represent y ( t) through the usual Fourier relation
Which is the maximum frequency beyond which aliasing will occur?
The maximum frequency beyond which aliasing will occur is called the Nyquist frequency. Above Nyquist frequency, seismic signal with higher frequencies are reconstructed in the form of seismic signal with lower frequencies. The highest frequency that can be successfully recovered from sampled seismic data is one half divided by the sample period.
The Nyquist Theorem states that in order to adequately reproduce a signal it should be periodically sampled at a rate that is 2X the highest frequency you wish to record. With images, frequency is related to structure size. Small structures are said to have a high frequency.
How to calculate max number of harmonics for given sample rate?
Say I Have a 20hz fundamental and a sampling rate of 44100 hz. My instinct is to take 44100/2 = 22050 (nyquist) and the take the fundamental and multiply by 2 while the frequency is less than nyquist and the count how many times I had to multiply.
Which is too high 1102 or 1103 harmonic?
The 1102th harmonic is 1102*20 = 22040 Hz, while the 1103th harmonic is 1103*20 = 22060 Hz, which is too high. (Note that some consider the fundamental as the 0th harmonic while others consider it the first harmonic.