For features X and Y, it seems like you would want to categorize the sounds based on the presence/absence of these features and run a logistic model instead (or a multinomial model, but I'm crummy at figuring out how to do these well). 4/n

If you do this, then your overall description has to include separate models for categorical and continuous statistical observations. I personally think this is fine, but I'm curious what others have done in this scenario. There is discrete and continuous data to simultaneously consider. 5/n