A Finite Difference Model for Articulated Slide-String Simulation

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Abstract

Slide-string instruments allow continuous control of pitch by articulation with a slide object whose position of contact with the string is time-varying. This paper presents a method for simulation of such articulation. Taking into account sensing and musical practice considerations, an appropriate physical model configuration is determined, which is then formulated in numerical form using a finite difference approach. The model simulates the attachment and detachment phases of slide articulation which generally involve rattling, while finger damping is modelled in a more phenomenological manner as a regionally induced time-varying damping. A stability bound for the numerical model is provided via energy analysis, which also reveals the articulatory source terms. The approach is exemplified with simulations of slide articulatory gestures that involve glissando, vibrato and finger damping.
Original languageEnglish
Title of host publication23rd International Conference on Digital Audio Effects
PublisherUniversity of Music and Performing Arts Vienna
Pages195-202
Number of pages8
Publication statusPublished - 09 Sep 2020

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