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i have a 192kHz sampled signal that has been measured using an ultrasound MEMS microphone and i want to visualize the spectral envelope. I have found here and here ideas on how to do it (mainly "peak picking in the power spectrum followed by parabolic interpolation"). My data looks like this: enter image description here

This is not a good envelope. Can someone explain how to set the parameters correct to receive a proper envelope?

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    $\begingroup$ you'd need to show us what your magnitude spectrum looks like; it's hidden by your orange plot, completely. Also, what's not "good" about it? We can't know what you're looking for. What is the quality in a "spectral envelope" that you're looking for? $\endgroup$
    – Marcus Müller
    Commented Dec 6, 2023 at 16:01
  • $\begingroup$ Since you only want to visualize, most of the time a smooth(x) on your signal would work well, considering averaging the energy spectrum preserves the total energy. Any other non-linear operation to highlight the peaks would mess with this simple operation. $\endgroup$
    – Brethlosze
    Commented Dec 9, 2023 at 3:07

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