## Inverse Fourier transform

Purpose

Description

Tips

Macro Synopsis

Modules

Related Functions

### Purpose

Inverse Fourier transform

### Description

"Inverse Fourier transform" calculates the discrete inverse complex Fourier Transform according to

out of the given signal X (supposed to be the Fourier transform of y) of length N (in samples) using a Fast Fourier Transform (FFT) algorithm.

### Tips

The type of FFT algorithm used can be set in the Basic Options menu.

### Macro Synopsis

`y = InvFFT(x);`

signal x,y;

Note that x is always a complex signal, while y can be a complex signal or a standard single-channel signal.

### Modules

Spectral

### Related Functions

Fourier transform.