Chapter . Impact Localisation Techniques for Tangible Acoustic Interfaces

D T Pham[a], M Al-Kutubi[a], Z Ji[a], M Yang[a], Z Wang[a]”, and S Catheline[b]

Abstract

This paper describes two impact localisation techniques for tangible acoustic interfaces. A rising-edge detection method was used for the time-delay-of-arrival (TDOA) approach and a cross-correlation method for the location-template-matching (LTM) approach. These methods were experimentally investigated using objects of different materials with different types of acoustic sensors. Experimental results have shown their potential for real-time localisation of impacts using common solid surfaces (a steel whiteboard and a hard wood board) and appropriate acoustic sensors for human computer ...

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