# realifft

Version:

Computes the inverse fast Fourier transform (IFFT) where the output is known to be real.

## Syntax

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

## a

Vector or matrix.

## b

Controls zero-padding to the signal. b is an integer and typically is a power of 2.

## d

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

## []

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

## c

Real inverse fast Fourier transform of a. If a is a vector, c = realifft(a) returns the original real inverse discrete Fourier transform (IDFT). If a is a matrix, c = realifft(a) returns the column-wise real IFFTs of all columns of a. c is a vector or matrix.

A = [10, -2+2i, -2, -2-2i];
C = realifft(A, 8) 

Where This Node Can Run:

Desktop OS: Windows

FPGA: This product does not support FPGA devices