Auralization by Michael Vorländer

Author:Michael Vorländer
Language: eng
Format: epub
ISBN: 9783030512026
Publisher: Springer International Publishing

(11.24)

with tc denoting a constant offset for data management independent of the number of walls and detectors.

With BSP or similar spatial data structures, the elementary time is reduced to

(11.25)

The elementary time is to be multiplied with the events of reflections, :

(11.26)

As a rough estimate the following elementary computation times can be expected (see Fig. 11.16 and Fig. 11.17). These plots illustrate the dependence of the computation time (order of magnitude) on the number of walls and on the number of rays. The number of receivers is set to nd = 1.

Fig. 11.16Order of magnitude of elementary computation time per reflection as function of the number of wall polygons, without and with binary space partitioning (example for PC with 2 GHz CPU in 2007) (From 2007 to 2020, computation times decreased by a factor of roughly 5)

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