This was pretty interesting, and it's definitely cool to see informative videos.
I did sort of feel like a certain amount of knowledge was presumed/prequisite to really understand this video (I didn't watch the other videos in your series, so if they're all meant to build on each other you might be able to disregard this).
I also didn't always feel like the visuals were engaging or provided a fuller/alternate understanding to the concepts.
Consider looking at some other artists that work with audio heavy material to look for ways to keep your budget maybe a bit low but still more fully engage the viewer. Vi Hart is a great example if you're not familiar with her work. It's not as 'educational,' but Nina Paley also does some really interesting stuff that is very satisfying in terms of arcs and shapes coming together.
On a different note, it was sort of odd to me that you brought in the female duplicate of Patchman character to 'help explain' but she didn't seem speak (just sort of pointed things out/stood as a visual aid). I can understand that it might be hard/another step to get a female voice actor, but maybe something to consider for next time!
Anyway, keep up the good work! I'll definitely try to watch more of your videos in the future and learn a bit more!