Synchrosqueezing, wavelet transforms, and time-frequency analysis in Python.
Questions tagged [ssqueezepy]
3 questions
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vote
1 answer
How to make a time/period (1/frequency) plot with CWT
This is a question about producing a time/period (1/frequency) plot from a CWT, instead of the time/scale output. I am trying to use the ssqueezepy python library to perform the CWTs. Then I understand I need to convert the scales into…
vibe
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1
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2 answers
Why does a synchrosqueezed wavelet transform show oscillating behavior?
This question came up in the context of the ssqueezepy library. As a basic experiment I did compute the synchrosqueezed wavelet transform of three basic signals:
A sine of 440 Hz.
A sine of 880 Hz.
A signal that mixes (1) and (2).
The result looks…
bluenote10
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Why have steps when using ssqueezepy to calculate instantaneous frequency?
I'm using ssqueezepy to calculate signal's instantaneous frequency, The method like below:
Tx, Wx, ssq_freqs, scales, *_ = ssq_cwt(data, ('gmw', {'beta': 2, 'gamma': 3}), order=0, padtype='wrap', fs=fs)
ridge_idxs = extract_ridges(Tx, scales,…
wsf1990
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