A real-time chord identifier web app using the Web MIDI API

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This was a quick, fun project that solves a practical problem I had — wanting to learn the names of piano chords, but not seeming to want to spend time staring at chord charts. I figured perhaps I could learn some music theory more deeply by encoding the logic into software, as well.I came across this table <https://en.wikipedia.org/wiki/Chord_(music)#Examples> that breaks down the composition of chords logically. I was reminded of a bitmask, so I translated each chord into a 12–bit bitmask with a bit for each distinct note letter name (e.g. “C” or “B♭”). Decoding binary was involved in interfacing with MIDI … that might have been the inspiration — regardless, a bitmask seems ideal for this

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Website: midi-chord-identifier.backwater.systems