Extensive acoustics computer simulations has been made using Odeon computer simulation software. From 300 to 850 measurements positions have been analysed in 24 rectangular rooms representing “shoe‐box” type concert halls with volumes of 8 000m³, 12 000m³ and 16 000m. In total 14 000 receiver positions have been analysed. For each receiver position eight objective measures have been calculated, in particular Reverberation Time (T₃₀), Early Decay Time (EDT), Clarity (C₈₀), Strength (G, G_early, G_late), Early Lateral Energy Fraction (LF₈₀) and Late Lateral Strength (G_LL). Most of measures have been calculated in six octave bands from 125Hz to 4000Hz. Extensive amount of generated data required developing of new methods for processing, comparing and graphical presentation of results. Those methods together with description of modelling and simulation procedures are described in this paper.