discrete Fourier transform
for each k = 0, 1,…, n−1 where
This involves a large number of calculations, but the number can be reduced by using an algorithm called the fast Fourier transform.
http://www.jhu.edu/signals/fourier2/index.html
• A discrete Fourier transform tool in which choosing different options from the signal menu illustrates a number of signals and the approximating function using a specified number of Fourier coefficients.
- splitting field
- sporadic group
- spread
- spring
- spring constant
- spurious correlation
- square
- square
- square-integrable
- square matrix
- square number
- square root
- squaring the circle
- squeeze theorem
- SSA
- SSS
- stabilizer
- stable equilibrium
- stable numerical analysis
- stadium paradox
- stagnation point
- standard basis
- standard deviation
- standard error
- standard form