Abstract
To avoid the time and cost consuming process of realizing artificial free field conditions by introducing passive damping to the interior (which in addition changes the global characteristic of the investigated enclosure) or the need of sophisticated numerical models required to apply inverse noise source localization techniques such as the IFEM, compare Sect. 7.2 and Chap. 13, a novel sound intensity probe with an active free field (SIAF) was proposed in (Sachau et al. in Schallintensitatsdetektor sowie Verfahren zum Messen der Schallintensitat. Patent. DE102004009644A1 22.09.2005, 2005a). This chapter reports on the application of the design methodology for ANC-systems proposed in Chap. 8 to the SIAF design process in which a first specification of the novel sound intensity probe was compiled in two successive design steps. The chapter also includes comments on the functional testing of the first SIAF realization. These experiments were especially focused on free field calibration considering the sound intensity measurements errors discussed in Sect. 4.2.2.
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