I have a qusetion about getting transfer function in real system.(adsbygoogle = window.adsbygoogle || []).push({});

When I solve mechanical engeneering problem, transfer function is always just given. So, I`m curious how to get transfer function in real system.

I have searched something about that and have found some mechine called spectrum analyzer.

Can this machine serve us a transfer function of real system?

If it is right, what is the form of transfer function which this mechine give? (ex; graph or equation)

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# How to get transfer function in real system?

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