aUniv. Music and Performing Arts Vienna
bAustrian Academy of Sciences
Abstract :
This paper demonstrates an experimental setup for music acoustic
experiments and contemporary music performance following a hybrid
physical modelling approach. In this setup, a clarinet mouthpiece with
a sensor-equipped reed is coupled to a virtual tube. A C++
implementation of a tube model is presented in the form of a Csound
opcode which runs on the ultra low-latency audio platform Bela. The
coupling is realised with an actuator that acts on the sensor-reed. The
actuator is driven by the virtual pressure at the closed end of the
tube model, whereas the sensor-reed signal is fed back to the model
as volume flow. The experimenter can modify the parameters for
length, radius, conicity, end-reflection and air density of the tube
model, and is also given control over the coupling between reed and
actuator in real time. This setup allows to explore acoustic
phenomena that are usually either enclosed (reed-resonator coupling)
or static (e.g. resonator shape) in conventional acoustic instruments
and may also be useful for music acoustics training.