Eigendrum Lets You Draw a Shape and Hear It as a Drum
A new browser toy called Eigendrum takes a simple but clever idea: draw an arbitrary 2D shape, and the app calculates how a drum with that exact outline would vibrate and sound when struck. It's built around eigenmode analysis, the same math used to model how membranes resonate based on their geometry, then renders the result as playable audio in real time.
The project is a solo Show HN release with minimal traction so far, but it's a nice example of using scientific computing concepts (partial differential equations, modal analysis) inside a lightweight, no-install web app that anyone can experiment with instantly.
It's part of a growing trend of small, single-purpose browser tools that turn heavier academic or audio-engineering concepts into interactive playgrounds using WebAudio and canvas APIs.