Impulse response function for non-stationary time domain signal

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Ramya Raman
Ramya Raman 2019-11-12
回答： Nikhil Sonavane 2019-11-15
how to find the Impulse response function for non-stationary time domain signal?
I first wanted to find a frequncy response and then inverse fourier transform. I found freqz function and invfreqz but its for system.
I want for data.
  2 个评论
Nikhil Sonavane
Nikhil Sonavane 2019-11-15
Impulse response is the output of a system when the input of the system is impulse signal. Hence, impulse response is defined for a system and not a signal. Can you rephrase your question and let me know what exactly you are looking for?
Ramya Raman
Ramya Raman 2019-11-15
I have a output signal from an experiment. I understand if we have the input and output we can get the frequncy response and taking the IFFT will give us the impluse reponse of the system. However, I have the inputs only in statistical form.
Is there a way to get the frequncy response only with the output signal?

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回答（1 个）

Nikhil Sonavane
Nikhil Sonavane 2019-11-15
The concept of frequency response from input and output by using convolution in time domain and multiplication in frequency domain is valid only in the case of LTI systems.

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