Words similar to fourier

Example sentences for: fourier

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The Fourier transform can also be employed as a filter.
Arrays misclassified by the Fourier transformation [ 23] were assigned to shifted positions in the cell cycle (this was also achieved by correspondence analysis [ 14]).
Alternatively, the data may be transformed directly, but with a computational shortcut called the Fast Fourier Transform, or FFT [ 47 ] . For this method the number of data points must be a power of two (2 N; [ 37 ] ). Obtaining exactly 2 Ndata points is not always possible for experimental reasons so the convention has been to extend the data set by adding zeros out to the next higher integer power of 2. Zeros are also often added beyond this point to increase resolution (see discussion on resolution below [ 37 ] ).
This is exemplified by the isolation through Fourier filtering of a circhoral (approximately hourly) rhythm in human core body temperature found against a background of a strong circadian temperature rhythm [ 59 ] .
Central to spectral analysis methods lies the discovery by Fourier that any function can be decomposed into a series of harmonic sine and cosine terms with coefficients determined by the goodness-of-fit to the data.