FFT Question: Please submit by
Friday, November 21,
and refer to Lab 6.
You are given a data file
that can be downloaded from the Web.
This file contains discrete-time data that was obtained by
sampling a continuous-time signal at the rate of
60 samples per second.
The data can be loaded into Matlab with
load sig1.dat -ascii
after which a variable named sig1 will be available.
Suppose it is known that either two or four distinct sine
waves are present in the data.
How many sine waves do you think are present in the data, two or four?
What are their frequencies, in Hertz?
Explain your reasoning.