What is Waving and Why – The Anatomy of the Wave Equation – Part 6

By Dr. Eugene Patronis

In part 5 of this series we employed the method of images to determine the complex mechanical impedance present at the origin of a plane wave tube of arbitrary length when the tube is terminated by a rigid barrier. In this article we will explore the general technique that is applicable to plane wave tubes having arbitrary terminations including that of a rigid barrier, an open-ended tube, and any other given mechanical impedance. Finally, we will consider the interaction between a small loudspeaker employed to excite the tube and an improperly terminated plane wave tube.