CosmoNote: A Web-Based Citizen Science Tool For Annotating Music Performances
summary
CosmoNote is a working web app that layers synchronized MIDI and audio (recorded from a Bösendorfer Enspire) with derived curves for loudness, tempo (beat extraction manual or automatic), and score-based tension. It uses D3 visualization and the Web Audio API, lets annotators place graded boundaries (with different click sounds and skip-to-boundary navigation), regions, comments, and note groups, supports zoomed playback and note selection, and is currently pilot-tested with a guest account — annotations aren’t yet saved to the public dataset.
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