I love this demo. It’s a good example of how much our perception is affected by our priors.

This is a other great example, where speech is synthesized with an acoustic piano (though the keys are controlled digitally, the sound is just from the hammers and strings). Without the subtitles you probably couldn’t understand, but it sounds pretty clear when you know what it’s saying already.

https://youtu.be/muCPjK4nGY4