This example will demonstrate the use of the FFT function to calculate\na 2D-FFT. Given that the data represents the width and the delay of two\nsignals this program calculates the 2D-FFT and displays the result on an\nintensity graph. Note that the results are Nyquist shifted so that low\nfrequencies appear in the center-This example will demonstrate the use of the FFT function to calculate\na 2D-FFT.　Given that the data represents the width and the delay of two\nsignals this program calculates the 2D-FFT and displays the result on an\nintensity graph. Note that the results are Nyquist shifted so that low\nfrequencies appear in the center