ECET 345 WEEK 1 LAB SIGNAL
OBSERVATION AND RECREATION
ECET 345
Week 1 Lab
1. How
does an experimental approximation of an impulse differ from an ideal impulse?
2. A step input is applied to the following circuit at
time t = 0. What will the output
waveform look like? What is the significance of the time constant for the
circuit? How will the observed waveform change as the value of capacitor is
increased?
3. How does a sine wave differ from a cosine wave?
4. With the knowledge you gained in the theory section, how
can an exponentially growing sinusoid be generated? Can a physical system
generate an exponentially growing sinusoid?
5. In finance, what does the growth curve of a compound
interest savings account look like over time
6. Create a MATLAB code that generates an amplitude modulated
(AM) signal with a 1 Hz information frequency and a 100 Hz carrier frequency,
with the carrier amplitude equal to 1.0 and the information frequency amplitude
equal to 0.9. The general form of an AM signal is
where Ac is the amplitude of the carrier, Ai is the amplitude of the
information signal, ωi is the frequency of the
information signal in radians/second, ωc is the frequency of the carrier
signal in radians/second, and t is time. Plot the graph over the
time period of 0 to 2 seconds. Give
meaningful labels to the X and Y axis as well as a title to the graph
7. Take the signal generated in the previous question
and find the signal spectrum using the tools you have learned in earlier labs.
Paste the signal spectrum and code below. (Hint: Use the method of finding the
signal spectrum of a signal that was shown in Lab 1.) Give meaningful labels to
the X and Y axis as well as a title to the graph.
No comments:
Post a Comment