A formulation of holophonic display
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This paper presents the results of a project that aims to develop an algorithm to synthesise a natural auditory phenomenon. The aspiration was the construction of a listener's holophonic experience of these auditory events, to develop a sonification that was both realistic and accurate, as a reflection of how we hear our own environment. The natural aural stimulation in the virtual environment is that of rain hitting leaves. This sound is synthesised and then processed to create a type of holophonic display so that physical, psychoacoustical and perceptual aspects of the spatial localisation are accounted for. Research that has been subsequently accomplished in the areas of digital waveguide techniques, head-related transfer functions (HRTFs), mathematics, signal processing and digital audio is assembled and applied to the formulation of this algorithm. An implementation in the Pd (Pure-Data) software package is also offered.