AudioKeys

Automatically manages key up/down events and fires note off events when the browser window loses focus, preventing stuck notes—a common issue in web audio apps, as mentioned in the README.

Supports monophonic or polyphonic modes with note priority settings (last, first, highest, lowest), allowing fine-tuned control for synth designs, detailed in the API section.

Offers two mapping layouts with optional octave shifting and velocity selection via the 'rows' property, providing adaptability for different musical interfaces, illustrated in the README diagrams.

Callbacks provide MIDI note numbers, frequencies, and velocity values, making integration with Web Audio nodes straightforward, as shown in the note object example.