Noise prediction for inboard compartments with the Designer NOISE(r) software from external sources

For many years the Designer NOISE(r) has been used to predict noise levels in the inboard compartments. It was assumed that noise sources are located inside the hull. However, many vessels have external noise sources which control noise levels received in compartments. Hovercrafts or aircraft carriers are just the examples of such kind of vessels. Recently the Designer NOISE(r) was modernized to calculate noise from external sources. Now the program has the ability to select top-side structural elements which are excited by external sources. The program can model two kinds of the sources, either two- or three dimensional. Directivity of sources is included. Based on well-known algorithms of architectural and structural acoustics, the program calculates transmission loss and vibration levels of the structural elements. Statistical Energy Analysis algorithms are used to calculate contribution of the structureborne noise excited by airborne noise sources. The example of application is included