New answers tagged frequency-response
2
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Why use white noise over an impulse signal (or vice versa) to understand how a system would behave?
It depends on measurement noise and your ability to produce a pure impulse. First radars used 100s of kW impulses and yet, were limited in range to few tens of miles. In 1947, Darlington proposed to ...
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2
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Why use white noise over an impulse signal (or vice versa) to understand how a system would behave?
This is a sleazy trick:
So you can start with a driver signal having a spectrum magnitude of whatever you want. Start with an kronecker impulse. Or a few randomly spaced kronecker impulses. Or a ...
- 21.1k
2
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Why use white noise over an impulse signal (or vice versa) to understand how a system would behave?
The generation of a really, truly, honest-to-goodness impulse not feasible practically, and even if it were, the power supply company would have a hissy fit if you tried to do so. Furthermore, keep in ...
- 20.7k
3
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Accepted
Show that a sinusoidal is an eigenfunction of an LTI system
Everything you did is correct. The problem is that you can't prove that sinusoids are eigenfunctions of LTI system because they aren't.
What you mean is that if the input signal to a real-valued LTI ...
- 91.2k
3
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Accepted
Why use white noise over an impulse signal (or vice versa) to understand how a system would behave?
An impulse excitation is certainly simple: you get the directly the impulse response. However impulse performs very poorly in the presence of noise since they tend to have very low energy.
With the ...
- 47k
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