Time between excitation wave and received waves
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LINDO MTSWENI
on 15 Jun 2021
Commented: Star Strider
on 16 Jun 2021
If I have graph of voltage vs time for the excitation signal and the received signal for a material...how do I calculate the time it takes for the wave to move from one side of the material to the other side.. the blue signal is the excitation then the orange signal is the received one
2 Comments
Jonas
on 15 Jun 2021
can you provide an image or data so we can see the excitation signal and the resulting signal?
Accepted Answer
Star Strider
on 15 Jun 2021
Try this —
F = openfig('sample.fig');
Ax = gca;
Lines = findobj(Ax, 'Type','line')
sent = findobj(Lines,'DisplayName','Excitation Signal');
Xsent = sent.XData;
Ysent = sent.YData;
recd = findobj(Lines,'DisplayName','Received Signal');
Xrecd = recd.XData;
Yrecd = recd.YData;
Ysidx = Ysent>0.01; % Threshold Signal
Yridx = Yrecd>0.01; % Threshold Signal
Yss = find(Ysidx,1,'first'); % First 'true' Index
Yrs = find(Yridx,1,'first'); % First 'true' Index
[istart,istop,dist] = findsignal(Yrecd(Yridx), Ysent(Ysidx));
figure
findsignal(Yrecd(Yridx), Ysent(Ysidx))
grid
figure
subplot(2,1,1)
plot(Xsent, Ysent)
% text(Xsent([istart istop])+Xsent(Yss), [0 0], compose('\\leftarrow t = %8.5E', Xsent([istart istop])+Xsent(Yss)), 'Rotation',90)
title('Sent')
grid
subplot(2,1,2)
plot(Xrecd, Yrecd)
text(Xrecd([istart istop])+Xrecd(Yrs), [0 0], compose('\\leftarrow t = %8.5E', Xrecd([istart istop])+Xrecd(Yrs)), 'Rotation',90, 'Horiz','left', 'Vert','middle')
title('Received')
grid
.
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