Digital Signal Processing Reference
In-Depth Information
•
Generate a random noise signal, n(t), using the HP 35665A Dynamic
Signal Analyzer. Set the noise level at 0.05 volt rms.
•
Combine the signal s(t) and the noise n(t), as shown in
Figure 8.4
,
and check the noisy output on the HP 35665A Dynamic Signal Ana-
lyzer. Plot the noisy output on the printer.
The experimental setup is complete for measurements.
Step 5: Running the DSK and making measurements
•
Follows the steps shown in steps 1-3, to implement a bandpass filter
on the 'C6711 DSK. The bandpass filter should have a center fre-
quency of 3 kHz and bandwidth of 100 Hz.
•
Go to
Project
pull-down menu in the
CCS window
, and then select
Build
(or press the button with three red down arrows on the top
toolbar in the CCS window). A new subwindow will appear on the
bottom of the CCS window. When building is complete, you should
see the following message in the new subwindow:
Build Complete,
0 Errors, 0 Warnings, 0 Remarks
The executable file
c:\ti\myprojects\filtering_signal&noise\
Debug\filtering_signal&noise.out
will be created.
•
Click on the
Debug
pull-down menu and select
Reset CPU
.
•
Then, to load the program onto the DSK, click on the
File
pull-down
menu and select
Load Program
.
•
In the new window that appears, double click on the folder
Debug
,
select the
filtering_signal&noise.out
file, and click on
Open
.
•
In CCS, select the
Debug
pull-down menu and then select
Run
, or
just simply click on the top
running man
on the left side toolbar.
You should now see the filtered output on the Signal Analyzer.
•
Verify the filtered output on HP 35665A Dynamic Signal Analyzer.
Make a plot of the filtered output on the printer.
8.4
Comparative Study of Using Different Filters on an Input
Radio Receiver Signal
Exercise 3: This multifiltering application consists of a series of five steps.
Follow the instructions carefully to successfully complete the experiment.
In this laboratory, we will study and hear the effects of different filters on
voice and music signals coming from a common AM/FM radio receiver. The
experimental setup is shown in
Figure 8.5
.
The 'C6711 DSK will again be
