Could be done with the Script Sequencer of HandyControl. Not as easy to use but your idea is something very basic. You can even use images so an image ‘heatmap’ like a wave is possible.

Are those files freely available?
Could be done with the Script Sequencer of HandyControl. Not as easy to use but your idea is something very basic. You can even use images so an image ‘heatmap’ like a wave is possible.

Are those files freely available?