eigendrum

Eigendrum is an innovative online tool hosted at eigendrum.com, serving as the main source for this interactive drumhead. For those seeking the previous address, basilashraf81.github.io/eigendrum, it functions as a mirror site, redirecting to the main domain. Thus, eigendrum.com remains the official and recommended URL for citation and interaction.

Individuals interested in collaborating or advertising with the creators, Basel Ashraf, can reach out via email at u2679054@uel.ac.uk. The website offers a unique experience by allowing users to engage with the drumhead in various ways.

Upon arriving on the site, users can press the Enter or Space bar to strike the drumhead at a designated point. This action triggers the generation of standing waves, each one conforming to the specific outline created by the user. By utilizing the arrow keys, one can move this outline to alter the percussion's shape and characteristics.

In addition to striking the drumhead, users have the option to switch on drawing mode. This feature enables them to trace a new outline using a pointer, thereby customizing the drumhead's shape further. Throughout this process, it is essential to remember that every mode generated is a standing wave, dictated by the outline's constraints.

One fascinating aspect of Eigendrum lies in its ability to produce different sounds depending on the location of the strike. When tapping the drumhead, the modes with nodal lines intersecting the mallet's position remain silent, resulting in a distinctive sound for each position. This phenomenon arises from the relationship between pitch and the area's size, determining the note that would naturally resonate from a circle of that dimension.

Moreover, users have the freedom to adjust tension and density, as well as the fade effect, which encompasses both material and air properties. However, certain elements remain beyond the user's control. The fundamental frequency of each shape, its relationship to the reference pitch, and the overtone ratios are all computed automatically, leaving no room for manipulation.