Exploring the Web Audio and Web MIDI APIs with virtual pianos

The article explores the creative possibilities of using the Web Audio API and Web MIDI API to build interactive virtual pianos, emphasizing accessibility and user engagement. It details the process of creating an accessible user interface for virtual pianos using HTML, CSS, and JavaScript, highlighting the importance of using <button> elements for better accessibility. The text explains how to render piano keys dynamically with JavaScript and style them with CSS, allowing the virtual pianos to be responsive and adaptable to various sizes and configurations. The article also delves into making the keyboard playable by integrating the Web Audio API and connecting real MIDI devices using the Web MIDI API to enhance the interactive experience. Furthermore, it introduces a chord visualizer tool that aids in learning chords by visualizing and playing them on the virtual keyboard. The author concludes by reflecting on the multidisciplinary nature of the project, combining design, mathematics, and music, and encourages readers to explore further by experimenting with the provided CodePen demos.