In this section, we briefly describe the physics of the string and its corresponding virtual representation. We describe how this model of the string is analogous to its physical counterpart and describe various initial-conditions for the different ways the string can be set into motion. We then discuss more complex modeling techniques for the vibrating string, initial pitch shifts, the coupling of multiple strings and the vibration of the string in two orthogonal planes and how such modeling techniques can describe natural phenomena such as two-stage decay.
