EEGR3111 Signals and Systems
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mathematical formulas including Euler formula.
% Example II
% Add 60 Hz strong noise signal to original signal
% Noise signal is on/off keyed with a 50% duty cycle at 5Hz
N60 = 10*cos(2*pi*60*t) .* pulstran(t,0:1/5:1, 'rectpuls', 1/10);
y60 = y+ N60;
% Listen to signal after filtered
% Script for ECGR 3111 Matlab Project #3 Fall 2012
% Illustrates using a filter to reduce noise in signal
% Generate signal
fs = 8000;
t = 0:1/fs:1-1/fs;
% Example I
y = cos(2*pi*500*t) + sqrt(2)*cos(2*pi*750*t);
% Listen to "clean" si
Evaluate the following integrals:
a. cos 2 t (t 2) dt = 0 Because the delta is outside the integration.
If the delta was inside the integration, then equal to the value of cos(4 ) = 1
b. t 2 (t 5)dt =
52 (t 5)dt = 25 (t 5)dt = 25
c. cos 2 t (t + 0.