This is a really fun video that can help you potentially decode some of your baby's cries and noises.
Half of the families I work with absolutely love this and find it incredibly useful, and the other half did not share the sentiment so I include this here in hopes it will help some of you (if not all! I always keep my fingers crossed!).
And for those who aren't interested in watching the video but would rather get the Coles Notes version, here is a Wikipedia article that goes over the idea quite concisely and accurately.