Mode studies on note sections of a Gubal

Over the years, Felix Rohner and Sabina Schärer, of Panart in Bern, Switzerland have implemented a number of significant modification to the standard Caribbean Steel Pan. These include using custom rolled sheet metal in place of commercially available used 55 Gallon drums, sinking the pan in a press rather than hand hammer sinking, dispensing with chiseled note section boundaries in favor of natural narrow change in curvature, adding central domes which give rise to more order in high overtone mode patterns, and building a lap held, hand played Hang. The latest addition to the Panart family is the Gubal, an inverted Hang with an added large dome on the bottom and the playing area, including the tone hole, at the top. Electronic Speckle Interferometric mode representations for Gubal note sections will be shown to illustrate spectral content of the Gubal.