aUniv. Music and Performing Arts Vienna
bAustrian Academy of Sciences
The interaction between woodwind players and their instruments is a key aspect of expressive music performance. Therefore, recent studies have focused on understanding how the actions of the players affect sound generation. Based on experimental results obtained using both human performers and an artificial blowing machine, this paper presents a numerical model that, taking the players' actions into account, may synthesise expressive woodwind instrument sounds. Implemented in C++ the model allows real-time performance on a standard desktop computer, thus enabling the user to modify the model parameters in a live performance scenario. Apart from varying parameters related to the embouchure of the player and the effective length of the resonator (i.e. mimicking modifications that could take place in real playing) this model also allows virtual modifications that would not be possible to realize in the physical world, such as a cone gradually morphing into a cylinder and vice versa. Besides parameters related to the excitation mechanism and the geometry of the instrument, the user is able to modify the properties of the air inside the instrument and the magnitude of the viscothermal losses.
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