Instantaneous bandwidth

Does anyone have a function to calculate instantaneous bandwidth? Like instbw in Matlab.

https://www.mathworks.com/help/signal/ref/instbw.html

The Matlab function, from its documentation, is a relatively simple post-processing of the spectrogram computed by pspectrum. So, if you compute the spectrogram using SignalAnalysis.tfd it should be straightforward to get the instantaneous bandwidth.

Thank you Steven.
I think that will do the trick.

@davidwallis, would you mind posting the Julia solution you may come up with?

NB: the Matlab implementation looks pretty good for this.

I have to move on to something else for the moment.
But I will send my solution when I have it.

Thanks all.