I'm looking for JavaScript library that would allow me to build a hobbyist autoharp tuner. I can program the UI, but need a note generator library. It just need

I'm looking for JavaScript library that would allow me to build a hobbyist autoharp tuner. I can program the UI, but need a note generator library. It just needs one API function or equivalent: soundNote(noteNum, duration); Note-number is the MIDI note number, and duration is the duration of the note in micro-seconds. (It can be in "beats" when the beat unit is defined via another function.)