Observing the effects of waveguide model elements in acoustic tube measurements
Tamara Smyth, Jonathan S. Abel · The Journal of the Acoustical Society of America · 2006
The theory of digital waveguide synthesis and its use in modeling virtual musical instruments, and in particular for cylindrical and conical bores, is well documented. Current models rely on certain approximations, however, particularly in cases where the theory provides no exact closed form solution, such as the reflection and transmission occurring at the bore’s open end. In this research, we observe, from a time domain, waveguide model perspective, how the theory corresponds to actual acoustic measurements. We consider four simple acoustic tube structures, incorporating both open and closed boundary conditions for both a simple cylinder and a cylinder with a conical flare, allowing us to isolate, and observe, the filtering effects of each model component.