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What is variable in spectrogram?

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Nuchaba Nureen
Nuchaba Nureen 2016-10-28
评论： Nuchaba Nureen 2016-10-28
Hello,
I would like to know that if I use below code to STFT the data
>>[y,f,t,p] = spectrogram(data,256,250,256,Fs,'yaxis'); then what is the y and p? when I understanded that f is frequency and t is time.
Thank you

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KSSV
KSSV 2016-10-28
y is short-time Fourier transform of the input signal p is power spectral density (PSD)

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