Using spectralFlux to plot Flux of a vector

Hi,

I have a waveform in time domain, but it is digitized, so It is basically a vector (yy). How can I plot Flux for it? When I write

flux = spectralFlux(yy,fs);

Error: Undefined function 'spectralFlux' for input arguments of type 'double'.

Seems MATLAB doesn't recognize spectralFlux. I'd appreciate your help at this matter.

Thanks

Answer 1

[jibrahim]

Sarah,

Which MATLAB release are you working from? This function was introduced to audio Toolbox in R2019a.

[Sarah Aimen]

Yes, It was the problem, I installed new MATLAB, now it works! Thanks though,

Answer 2

[Bjorn Gustavsson]

It is not at all clear what you want to do, spectral flux is not a term I've heard before - this might be because I'm ignorant, or because you've translated from another language and the exact English term is something else. I'll take a swing anyways...

You might be interested in the spectrogram function. Have a look at the help and documentation for that function.

If I'm way off, you might get better help if you describe what spectral flux is in more detail.

HTH

[Sarah Aimen]

Thanks for your response, and sorry for the confusion.

I'm following this link

https://www.mathworks.com/help/audio/ref/spectralflux.html

I want to use it for my own signal, X(t).

How should I do that?

Thanks