Analyzing Audio Files

I just want to gather information on suggestions on what technologies or methodologies to use to analyze audio files. I would like to take some audio files and put them into categories based on frequencies, etc. (thinking of Tensorflow) and develop a model (probably based off regression and create a heat map) to describe them. Does anyone have any suggestions how to go about it? I am thinking good at learning technologies on the fly. I am especially open to sql, d3, R, Python, JavaScript, Tableau related technologies