The analysis of direct and reflected wavefronts performed with high spatial resolution along a line array provides a lot of information about sound propagation in an enclosure. This paper introduces a graphical representation of impulse responses which allows the identification of low-order reflections arriving at the array. A comparison with the image-method simulation applied in the case of a simple "shoe-box" room leads to acoustic maps enabling 3D localization of a loudspeaker emitting a probing signal. The approach is then extended to the case of uncontrolled sources, in which the Phase Transform is considered to derive information about multiple arrivals.

Analysis of reflected wavefronts by means of a line microphone array

Svaizer, Piergiorgio;Brutti, Alessio;Omologo, Maurizio
2010

Abstract

The analysis of direct and reflected wavefronts performed with high spatial resolution along a line array provides a lot of information about sound propagation in an enclosure. This paper introduces a graphical representation of impulse responses which allows the identification of low-order reflections arriving at the array. A comparison with the image-method simulation applied in the case of a simple "shoe-box" room leads to acoustic maps enabling 3D localization of a loudspeaker emitting a probing signal. The approach is then extended to the case of uncontrolled sources, in which the Phase Transform is considered to derive information about multiple arrivals.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11582/16249
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