Setting frequency limits to LDFCS and ribbon plots

[jjkenned]

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I find it difficult to visualize lower and more restricted frequency singing species using the False Colour Spectrograms and ribbon plots.

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I'd like to be able to restrict the frequencies represented when making LDFCS and when making ribbon plots. Ideally it could be done before audio2csv just to save space and computing power, but it would also just be helpful to have when forming the visualizations.

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Zooming in to the FCS is fine, but it's not as consistent as it could be for visualization.

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This would really help with using these features to track singing behaviour in smaller groups of target species.

[atruskie]

Like a bandpass for false colour spectrograms. Great idea.

What do you want to happen to the ouput images?

1. they have content removed (i.e. a bandpass of 0 -- 1000 Hz, would produce an image that is ~26px high?)
2. the same as 1. but for the image to get aritificially scaled as well (say a 2x zoom)?
   • such a "zoom" won't add any new information, it'd be the same as zooming in in a image viewer
   • the images would take up more space on disk
   • they would naturally be bigger though and may be easier to view

[jjkenned]

I think option 2 would be better for my purposes.