Generic model of an industrial product (GSM) is the means of representing acoustically the frame (body) of the product, which plays an equally important role in noise radiation as do the primary noise sources, the mechanical components.
A GSM is actually one real frame model backed by one or several sub-models the role of which is to assess the effects of design modifications on the emitted noise.
A frame, and thus the GSM representing it, usually consists of several principal mechanical parts, such as supporting struts, plating etc. It was shown that the vibro-acoustic performance of the structural parts which are directly excited by noise sources and of those which ultimately radiate noise seem more important than of those corresponding to the remaining, interconnecting parts. This important finding affects the GSM design practice.
GSMs for some products, such as air handling unit and washing machine are physical models, while some other types of products, such as telecommunication station or refrigerator, favour use of mathematical models implemented in numerical computation codes.
Several reports have been produced describing GSM design and manufacture.