Spectral PMN with maximum decibel values per frequency bin

[ThomasLuypaert]

Is your feature request related to a problem? Please describe.

At present, the spectral PMN index provides the averaged decibel value per frequency bin.

Describe the solution you'd like

It would be nice to have an option to calculate the maximum decibel value per frequency bin as well.

Describe alternatives you've considered

Additional context

[atruskie]

To be clear:

You want the maximum decibel value from each frequency bin, after noise removal?

What should we name this? MMN?

Currently, PMN is the average decibel value from each frequency bin, after noise removal.

[ThomasLuypaert]

To be clear:

You want the maximum decibel value from each frequency bin, after noise removal?

What should we name this? MMN?

Currently, PMN is the average decibel value from each frequency bin, after noise removal.

Yes, indeed, the maximum decibel value for each frequency bin after noise removal.

If the Signal-to-Noise ratio is currently defined as "The difference between the maximum decibel value in the decibel envelope and the decibel value of BGN", perhaps this new feature could be the spectral SNR, or SSN/SNRsp?

[towsey]

Yes, I think spectral SNR is a reasonable name for this index. I can set this up when I work on Issue #292, calculating the spectral centroid as a summary index.