ifft: Inverse FFT

In signal: Signal Processing

Description

Matlab/Octave-compatible inverse FFT.

Usage

ifft(x)

Arguments

x	the input array.

Details

It uses fft from the stats package as follows:

fft(x, inverse = TRUE)/length(x)

Note that it does not attempt to make the results real.

Value

The inverse FFT of the input, the same length as x.

Author(s)

Tom Short

See Also

fft

Examples

ifft(fft(1:4))

Example output

Attaching package: 'signal'

The following objects are masked from 'package:stats':

    filter, poly

[1] 1+0i 2+0i 3+0i 4+0i

signal documentation built on May 25, 2021, 3 p.m.