zooming out of a signal?

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Dick Rusell 2014-10-10

回答： Azzi Abdelmalek 2014-10-10

Can anyone help me zoom out or change the window size? Because the signal I'm using creating a blue box because of the high frequency.

f=400;
ts=1/8000; 
T=5; 
t=0:ts:T; 
y=sin(2*pi*f*t);
plot(t,y)

Azzi Abdelmalek 2014-10-10

Reduce the value of T

f=400;
ts=1/8000; 
T=0.01; 
t=0:ts:T; 
y=sin(2*pi*f*t);
plot(t,y)

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