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Creating a pulse for thermal noise

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Hi
How can I start my Y-axis from -174
And not from 0?
*Example drawing
clc,clear
Hz = 10;
Amp = -164;
x = -10:0.01:10;
% a pulse function
f = @(xi,a,b) a*rectpuls(xi,b);
% plot to
plot(x,f(x,Amp,Hz),'b--');
title(['Pulse']);
xlabel('Freq');
ylabel('Amplitude');
TNX

Accepted Answer

Fangjun Jiang
Fangjun Jiang on 20 Sep 2021
Edited: Fangjun Jiang on 20 Sep 2021
clc,clear
Hz = 10;
Amp = 10;
x = -10:0.01:10;
% a pulse function
f = @(xi,a,b) a*rectpuls(xi,b)-174;
% plot to
plot(x,f(x,Amp,Hz),'b--');
title(['Pulse']);
xlabel('Freq');
ylabel('Amplitude');

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