Plink-plonk.js – hear webpages render with DOM observer and audio API
I cannot help but refer to this old, old joke: <a href="https://en.wikipedia.org/wiki/Blinkenlights#Etymology" rel="nofollow">https://en.wikipedia.org/wiki/Blinkenlights#Etymology</a><p>(I used to discern between program stages on 286/386 because sound of power supply was different for different loops)