Qualitative and Quantitative assesments of the Playability of a Virtual Bowed String Instrument.}
M.Sile O'Modhrain, Stefania Serafin, Chris Chafe and Julius O. Smith III
ABSTRACT
In this paper, we test the hypothesis proposed
by Serafin and Smith (ICMC 2000), namely that the playability
of a bow stroke can be fully described by three
parameters - bow velocity, bow position and bow force.
Moreover, the envelope of these parameters influences the quality of the attack.
In this paper, we present a novel technique
for measuring parameters of bowing.
By coupling a haptic display to a computational model of a bowed string,
we simulate the normal and frictional forces present during bow-string
interaction. We then measure force and velocity of the virtual bow
over the duration of a bow stroke and determine what preportion of the bow stroke
lies within the region of playability.