Title :
Localization of moving noise sources by means of acoustical holography
Author :
Steiner, Rolf ; Kaelin, August
Author_Institution :
Inst. for Signal & Inf. Process., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
In this paper a new approach to the localization of moving noise sources by means of acoustical holography is presented. In particular, we first discuss the method under ideal circumstances (i.e., infinite extension of the hologram plane) and continue by considering the influence of an aperture in the hologram plane. We thereby derive the appropriate Green´s functions which are also of great importance in the presence of an airflow (wind channel measurements). The method is verified by means of an example, the detection of a moving harmonic point source
Keywords :
Green´s function methods; acoustic holography; acoustic noise measurement; Green function; acoustical holography; airflow; aperture; harmonic point source; localization; moving noise source; wind channel measurement; Acoustic noise; Acoustic propagation; Apertures; Engines; Frequency; Green´s function methods; Holography; Information processing; Partial differential equations; Signal processing;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.612843
