In this paper, a new approach for modelling bowed-string excitation in physical modelling sound synthesis of violin is presented. A major improvement is achieved by estimating the excitation area by the computation of fractional delay (FD) coefficients representing the contact locations. This gives rise to a more complex behaviour in the string model, thus corresponding better to natural sound and vibration produced in real bowed strings. This computationally efficient method gives feasible results for improvement of musical instrument sound synthesis.
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