HHT is a time-frequency analysis method to adaptively decompose a signal into basis components at different timescales (i.e., the empirical mode decomposition), ... ... <看更多>

The instance frequency can be calculated in Python by def hilb(s, unwrap=False): from scipy.signal import hilbert H = hilbert(s) amp ... ... <看更多>

I figured out an answer. From here: https://web.cs.dal.ca/~tt/CSCI690611/papers/HHT.pdf. The Hilbert spectrum x(t) is: enter image description here. ... <看更多>

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