Working engine

I’ve got a working PCA engine, and a few simple features implemented.  I also have acquired a large set of MP3s with accompanying Echo Nest data, to create test libraries.  So now I have code that takes a small test library, computes/retrieves a handful of audio features for that library, and remaps the tracks onto a smaller-dimensional space.

Now I’m working on a way to show the PCA results visually, since it’s much harder to test without that.  I’m also developing new Feature classes focusing on general timbral descriptions of a track.

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