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Anne Beetem Acker

Experimental electronic instrument designed at the Pontificia Universidad Católica de Chile by Claudio Bertin, Gabriel de Ioannes, Alvaro Sylleros, Rodrigo Cádiz, and Patricio de la Cuadra. First described publicly in 2010, it has an interface that responds to the user’s natural gestures, improves the audience observation experience, is easy to master, and allows exploration of tonal and rhythmic possibilities. The novel design methodology centred on formal analysis of video recordings of a focus group discussing characteristics of instruments and performance, as well as of video recordings of individual gestural responses to eight categories of sounds of diverse timbre, pitch, and dynamics. The results were used to describe the characteristics of the instrument being designed and to create mock-ups that led to the Arcontinuo. The instrument’s playing surface resembles a curved board that is placed vertically on the performer’s chest, with straps securing it over the shoulders and a prop resting against the player’s stomach. The board’s flexible magnetic surface measures three-dimensional data from several fingers simultaneously, using an embedded grid of Hall effect sensors. Software interprets the results to produce the sounds....