Air-borne sound source characterization by patch impedance coupling approach

An approach of independent sound source characterization is discussed. The source is defined by its blocked sound pressure and surface impedance via a suitable enveloping surface. Both the blocked pressure and the impedance are made discrete using the patch averaging concept. The approach is adapted to numerical as well as experimental implementation. The characterization of a source by patches allows for acoustical sub-structuring, which in turn enables the prediction of the sound field created by a source coupled to an arbitrary environment. Numerical simulations are presented which demonstrate the validity of the approach.