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36 | #!/usr/bin/env python
# python
from pylab import *
dt = 0.01
t = arange(0,10,dt)
nse = randn(len(t))
r = exp(-t/0.05)
cnse = conv(nse, r)*dt
cnse = cnse[:len(t)]
s = 0.1*sin(2*pi*t) + cnse
subplot(211)
plot(t,s)
subplot(212)
psd(s, 512, 1/dt)
show()
"""
% compare with matlab(TM)
dt = 0.01;
t = [0:dt:10];
nse = randn(size(t));
r = exp(-t/0.05);
cnse = conv(nse, r)*dt;
cnse = cnse(1:length(t));
s = 0.1*sin(2*pi*t) + cnse;
subplot(211)
plot(t,s)
subplot(212)
psd(s, 512, 1/dt)
"""
|
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