[btown]

Audio Worklet https://developers.google.com/web/updates/2017/12/audio-work... is way, way cooler than these demos imply, as it actually gives you a high-priority digital signal processing thread separate from the UI thread. And because it can benefit from WebAssembly, it's only a matter of time before the power of native audio applications is ported to the browser.

This thread https://forum.juce.com/t/juce-plugins-in-webassembly/25255 , particularly the demo here https://webaudiomodules.org/demos/wasm/dexed.html (try using the ZXCV row on your keyboard) are incredibly promising, as they're straightforward ports of real synthesizers.

Other comments have mentioned that this is coming to Firefox as well; core contributors on the media team have been discussing how it's a priority as recently as two days ago: https://bugzilla.mozilla.org/show_bug.cgi?id=1062849

Really exciting times for the web audio space!