Interest in the transient of a wave in a viscous medium sparks the idea for a transmission line analog of the viscous wave equation. For convenience, lumped elements are selected by the application of transmission line and filter theory to simulate the transmission line analog. Practical components for the model introduce additional parameters that cause the model to be better described by a higher order, more general wave equation. Parameter choices are made to minimize the unwanted differences between the more realistic wave equation for the model and the viscous wave equation. The differential equation describing the actual model seems to have no easily attainable solution. However, a modified form of Blackstock's solution to the viscous wave equation is presented as a solution to a special case of the differential equation describing the actual model. Tone bursts injected into the completed model clearly show the presence of a precursor and a “postcursor.” Comparisons of the waveforms obtained experimentally and those predicted by the modified solution are shown and discussed. © 1969, Acoustical Society of America. All rights reserved.
