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Basic Signals, Systems, and the DFT
Overview
One of the best ways to learn the material in this course is through using a computer. MATLAB is a
powerful software package which is very useful for generating, processing, and plotting signals, and
insight into many signal processing concepts can be gained through using it. This project is primarily
designed to get you familiar with using MATLAB.
If you have already completed the project
Basic Signals and Systems
, you only need to do exercises 3 and
4.
You may find the
diary
command useful for maintaining a history of your MATLAB session. Other
commands you may find useful include
subplot
,
orient tall
, and
orient landscape
. To get
information about a function and its usage, use the MATLAB
help
command, e.g.
help subplot
,
help filter
, etc.
Basic Signals
1.
Generate and plot (using MATLAB'S
stem
command) the sequence
x[n] = (0.95)
n
cos(
π
/20 n)
for 0 ≤ n ≤ 63. Note that MATLAB'S indexing for the first element starts with
1
and not

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