# fft

Version:

Computes the fast Fourier transform (FFT).

## Syntax

c = fft(a)
c = fft(a, b)
c = fft(a, b, d)
c = fft(a, [], d)

## a

Scalar or array of any dimension.

## b

Number of rows of a to use. If b is larger than the size of a, a is resized and padded with zeros. b is an integer and is typically a power of 2.

## d

Dimension of a in which MathScript performs the FFT. d is an integer.

## []

Tells MathScript that you want to specify a and d but not b.

## c

Fast Fourier transform of a. Array with the same size as a, except you define a specific dimension. If you specify d, the size of c is the specified dimension. If a is a vector, c = fft(a) returns the original discrete Fourier transform (DFT). If a is a matrix, c = fft(a) returns the column-wise fast Fourier transforms of all columns of a.

A = [1, 2, 3, 4, 4, 3, 2, 1]
C = fft(A, 8)

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported