Waveform

    https://gist.github.com/danigb/ffe0c4e7a06586d4bbb018ca69887ae8
    https://bloodb0ne.medium.com/drawing-good-looking-waveforms-on-the-web-d6df24ddff7d
    https://css-tricks.com/making-an-audio-waveform-visualizer-with-vanilla-javascript/
    https://stackoverflow.com/questions/39175203/html-canvas-zoom-to-region-on-graph
    https://medium.com/swlh/building-a-audio-visualizer-with-javascript-324b8d420e7
    https://stackoverflow.com/questions/25836447/generating-a-static-waveform-with-webaudio