@lupyuen I tried to use noflow, but gave up after a while. And started over with something I call "Pink2Web", which is a small (few MB) and fast (near C/C++) runtime, with a graphical UI. See https://github.com/niclash/pink2web
The same UI is demo'd here; https://www.linkedin.com/posts/niclashedhman_this-is-the-beginning-of-a-programming-tool-ugcPost-6608636732810371072-d6sh although trying to apply that to audio stream processing.
@niclas Cool thanks! Will try it out