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QutEcoacoustics / audio-analysis

The audio analysis code (AnalysisPrograms.exe) for the QUT Ecoacoustics Research Group
https://ap.qut.ecoacoustics.info/
Apache License 2.0
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Spectral PMN with maximum decibel values per frequency bin #293

Open ThomasLuypaert opened 4 years ago

ThomasLuypaert commented 4 years ago

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 commented 4 years ago

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 commented 4 years ago

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 commented 4 years ago

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.