Try out: https://rikner.github.io/spectral-beat/
A web app built with react, redux, WebAudio, getUserMedia and TypeScript. It analyzes the audio signal of your microphone and shows pretty colors :-)
- replace ScriptProcessor with AudioWorker
- support as Progressive Web App
- UI/UX improvements
- a more elaborate visualization
- Equalizer for input signal
- parameters controllable by MIDI
PRs welcome, pls get in touch!