An integral relationship between the time variations of the strength of a line source and the time variations of the resulting pressure wave was derived by Levi‐Civita in 1897. In general, this integral cannot be evaluated by analytical means. An analog‐computer set‐up is shown that uses Levi‐Civita's integral to simulate a line source and generate functions that describe the resulting pressure disturbances. A number of examples are given. [Research supported in part by the Weather Radar Branch, Meteorology Laboratory, U. S. Air Force Cambridge Research Laboratories, Office of Aerospace Research.]