Lab5 The Fourier Series and Fourier Transform
A continuous time function is shown below in figure 1. This signal is a sinc function defined as y(t) = sinc(t). The Fourier transform of this signal is a rectangle function.
Matlab tip: The following commands are useful when working with the Fourier transform:
abs gives the magnitude of a complex number (or absolute value of a real number)
angle gives the angle of a complex number in radians
[Note: The fft command does not give the exact transform for a continuous time signal which we have in this case. For instance the magnitude will not be correct. However in order to obtain the general shape including relative magnitudes it can be quite useful.]
HW5 The Fourier Transform