Sophisticated computer programs for the analysis of acoustic propagation in flow ducts have been developed in recent years. These programs are typically capable of accounting for the convective and refractive effects of mean flows and boundary layers, as well as for the scattering and absorption effects of wall acoustic linings and duct nonuniformities. In concert with improvements in analysis capability, test facilities have been developed for conducting extensive experimental investigations of flow duct acoustic linings. This paper describes the evolutionary development of a specific example of such analytical and experimental capabilities and, furthermore, describes the recent and ongoing synthesis of these capabilities into a unified duct acoustics research tool.