doc and data folder not included check Dropbox or ask David

http://www.speech.cs.cmu.edu/15-492/slides/03_mfcc.pdf

https://www.kaggle.com/ybonde/log-spectrogram-and-mfcc-filter-bank-example

Full story: https://towardsdatascience.com/how-to-train-an-image-classifier-in-pytorch-and-use-it-to-perform-basic-inference-on-single-images-99465a1e9bf5

PytorchTesting