Probabilistic Model of Pianists’ Arm Touch Movements

Hadjakos, Aristotelis and Aitenbichler, Erwin and Mühlhäuser, Max

Proceedings of the International Conference on New Interfaces for Musical Expression

Measurement of pianists’ arm movement provides a signal,which is composed of controlled movements and noise. Thenoise is composed of uncontrolled movement generated bythe interaction of the arm with the piano action and measurement error. We propose a probabilistic model for armtouch movements, which allows to estimate the amount ofnoise in a joint. This estimation helps to interpret the movement signal, which is of interest for augmented piano andpiano pedagogy applications.