Objective measures, derived from BRIRs for frontal head orientation (averaged over all three loudspeaker positions and left and right ear), for all BRIR sets considered in this study. Box plots refer to BRIR sets of individual subjects, lines to non-individual BRIR sets. Left: resulting reverberation times (T20), right: resulting A-weighted third-octave band sound pressure levels, obtained after convolution of the stimulus with the respective BRIRs.