As someone who has synesthesia, a background in engineering, and currently studies music technology, I'm pretty confident saying this has nothing to do with the

As someone who has synesthesia, a background in engineering, and currently studies music technology, I'm pretty confident saying this has nothing to do with the former. I'm genuinely confused why OP called this synesthesia. Synesthesia, by definition, is the _mixing_ of your senses. Letters having colors, smells having personalities, music tasting like cheeseburgers. NOT, using a spectrogram to display audio. I can sort of see where OP is coming from, but I think it's a bit farfetched to call this synesthesia. As fluidcruft said, a more suitable title would probably be "Audio Analysis with Signal Processing Algorithms" or something along those lines. Regardless, it's still a pretty impressive project.