very nice. good to see this as an open js library which uses canvas. seeing these kind of visualisations always makes me wonder though... is the amplitude of th

very nice. good to see this as an open js library which uses canvas. seeing these kind of visualisations always makes me wonder though... is the amplitude of the spectrum all the info we can obtain and use for visualisation? How difficult would it be to make an api that can detect the different types of sound in a sample and put out different data streams for each?