Membrane Bugle

This goofy little instrument is kind of like a bugle, but instead of modulating the tone by pursing your lips, the tone is changed by varying the tension in a membrane that creates the vibration. It consists of a horn with a membrane stretched across the narrow end. There is also a concentric tube around the outside of the narrow end where you blow air in. The air pressure forces the membrane outward, where it escapes over the inner rim and thru the horn, causing the membrane to vibrate in the process. Many thanks to Fabien T. who's PVC Membrane Clarinet inspired this design. (He's also got a link to a great video by Nicolas Bras, who came up with the membrane reed concept.)For the membrane, you'll need a small sheet of rubbery material like cut open balloon, or a latex or nitrile surgical glove. (A glove is easier to work with because it will lay flat.) The membrane gets glued to a threaded ring, which is then used to pull the membrane down uniformly over the end of the horn. Screwing