Change Power Spectrum to frequency spectrum in Signal Analyzer
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I'm using Signal Analyzer to compute frequency spectrum, but the app gives me power spectrum in dB, can anyone help to change from power spectrum (dB) in normalized frequency spectrum?
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Yukthi S
2024년 2월 15일
Hi Marco Cesari
I got that you were trying to compute Frequency spectrum, but the Signal Analyzer app was giving an output of Power Spectrum in dB.
By ‘Frequency spectrum’, I am assuming that you meant plotting a signal’s amplitude or phase in frequency domain. For that purpose,you can use “fft” function available in MATLAB.
y=fft(x)
The Signal Analyzer app is used to just visualise the spectrum in different domains. It is used to explore, analyse and compare signals or regions of interest. You can have a look at the description of Signal Analyzer app here for more insights:
You can refer to the below documentation for more information on “fft” function:https://in.mathworks.com/help/releases/R2021b/matlab/ref/fft.html?searchHighlight=fft&s_tid=doc_srchtitle#:~:text=Product%20Updates-,fft,-Fast%20Fourier%20transform
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