Using your browser’s Web MIDI API, you can connect a real USB-connected MIDI keyboard like the one above and detect its events in your browser. These are also the sizes you typically see in music software.įor example, here’s a 32-key keyboard from Native Instruments: I also wanted responsive virtual pianos along with a simple way to render them in various sizes to represent the typical sizes of MIDI keyboards: 88 keys, 61 keys, 49 keys, 32 keys, and 25 keys. Using elements in the correct order allows you to tab through the notes and trigger their playable state with a click event. So instead, I wanted a simple wrapper containing all the notes within as elements in the correct order, like so: Most of the examples I could find for “CSS virtual pianos” used float properties and separate containers for the black and white piano keys. Creating an accessible UI for our virtual pianos Let’s start with the UI - namely, the virtual pianos. You can interact with the demos in this CodePen collection. Attaching a MIDI device with the Web MIDI API.Making the keyboard playable with the Web Audio API.Reviewing virtual piano accessibility features.Creating an accessible UI for our virtual piano.In this article, we’ll explore how to use the Web Audio API and Web MIDI API using virtual pianos. This opens up opportunities to add a new level of interactivity for users. There are already a lot of articles about this API, but there are so many other interesting things you can do with it.įor instance, you can easily use the Web MIDI API in conjunction with the Web Audio API. I’ve had a great deal of fun with the Web Audio API recently. Exploring the Web Audio and Web MIDI APIs with virtual pianos Mads Stoumann Follow I'm a web developer, graphic designer, type designer, musician, comic book geek, LEGO collector, husband, and father, located just south of Copenhagen, Denmark.
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