The content of the thesis describes approach of localization incoherent sources over 3D sound intensity array. The core of this work is a blind source separation combined with 3D sound intensity calculation, what results in angle detection of incoherent sources. The feasibility of the proposed method is firstly studied over simulations prior the method is exampled to experimental measurements. Performance evaluation measures are suggested over statistical quantities and possible errors that arose or could have arisen are discussed.