mathematics, the discrete-time Fourier transform (DTFT) is a form of Fourier analysis that is applicable to a sequence of discrete values. The DTFT is...
40 KB (5,159 words) - 20:58, 9 May 2024
In mathematics, the discrete Fourier transform (DFT) converts a finite sequence of equally-spaced samples of a function into a same-length sequence of...
68 KB (10,510 words) - 12:55, 30 April 2024
large numbers. The discrete version of the Fourier transform (see below) can be evaluated quickly on computers using fast Fourier transform (FFT) algorithms...
37 KB (4,733 words) - 18:28, 14 May 2024
original Fourier transform on R or Rn, notably includes the discrete-time Fourier transform (DTFT, group = Z), the discrete Fourier transform (DFT, group...
177 KB (21,038 words) - 10:42, 23 May 2024
continuous-time Fourier transform is evaluated on the s-domain's vertical axis (the imaginary axis), the discrete-time Fourier transform is evaluated...
38 KB (4,524 words) - 18:18, 4 May 2024
In mathematics, the discrete Fourier transform over a ring generalizes the discrete Fourier transform (DFT), of a function whose values are commonly complex...
15 KB (2,816 words) - 12:31, 5 April 2024
actually refers to the inverse Fourier transform, which is a sum of sinusoids at discrete frequencies, weighted by the Fourier series coefficients. When the...
7 KB (933 words) - 23:28, 7 November 2023
A Fast Fourier Transform (FFT) is an algorithm that computes the Discrete Fourier Transform (DFT) of a sequence, or its inverse (IDFT). Fourier analysis...
63 KB (7,355 words) - 13:09, 1 May 2024
non-uniform discrete Fourier transform (NUDFT or NDFT) of a signal is a type of Fourier transform, related to a discrete Fourier transform or discrete-time Fourier...
14 KB (2,442 words) - 18:33, 27 February 2024
Frequency domain (redirect from Fourier domain)
maps a function having a discrete time domain into one having a discrete frequency domain. The discrete-time Fourier transform, on the other hand, maps...
10 KB (1,193 words) - 15:29, 26 December 2023