Difference Between Python and MATLAB Spectrograms

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Ron Levine
Ron Levine 2020 年 7 月 16 日
コメント済み: Carla Peterson 2023 年 1 月 13 日
I am comparing the MATLAB and Ptyhon spectrogram output stft and Sxx. The values of stft and Sxx differ by orders of magnitude and are not linearly related. Why is this?
MATLAB
[stft,f,t] = spectrogram(x,nWind,nOver,[],sRate);
Python
f, t, Sxx = scipy.signal.spectrogram(x, fs=sRate, nperseg=nWind, noverlap=nOver, nfft=256, mode='complex')
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Carla Peterson
Carla Peterson 2023 年 1 月 13 日
Was this ever resolved? I'm having the same issue and I'm wondering why they are different and what else I should do to get the same results between two programs. I really don't want to convert my Matlab to Python at this time. I'm using someone else's Python code.

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