Improve generalization to new datasets

[jacobsn]

Here are a few suggestions:

http://machine-listening.eecs.qmul.ac.uk/2016/11/bird-audio-detection-tips-on-building-robust-detectors/

Probably the first step would be to setup the training/testing code to train on one dataset and test on another so we can really test whether our attempts at improving generalization are working.

Here are some other datasets we could use:

• http://projects.csail.mit.edu/soundnet/ (huge... probably what we want to use)
• https://github.com/karoldvl/ESC-50