2.5.15 plotFFT()

Overview

This function plots the amplitude of each frequency by performing fast Fourier transform (FFT).

Inputs

Required

• signal: double, the signal to perform FFT on.

Options

• Fs: double, default is 2000; determines the sampling frequency of the signal.
• pointsToEstimateCarrier: double, default is 1e6; determines the minimum number of samples o estimate the carrier frequency.
• xlim: double, default is [0, inf]; determines the x axis limit of the final plot.

Outputs

There is no explicit output of this function.

Examples

figure; plotFFT(labjack.raw(1,:));