Punti di vista e punti di udito

Time-scales involved in the perception and categorization of sound in space, and a model for the interaction of such scales, based on empirical entropy. If a viewpoint is, mathematically speaking, a spatial scale at which visual attention is put, a "hearpoint" can be modelled as a time-scale at which auditive attention is put. Very small timescales characterise the entire perception of spatial organization of sound. The largest such scale is the interaural correlation, but much smaller scales are relevant, as sound gets scattered around the head of the perceiver, or as the external pinna processes the sound differently with the slight tilting of the head. A mathematical model is proposed, for the cognitive integration of different timescales in real time, as the information flows. This model is, to our knowledge, the first to propose a measuring experiment to assess the time scale of human attentio span when listening to sound. The model is more general for time complex phenomena.