Simulation errors for different decision strategies and cue combinations show that static combination (WSM) based on monaural and interaural spectral shape cues (MSS, ISS) performs best. (a) RMS simulation errors for different strategies and pooled experimental data, N = 54. Error bars denote 95% confidence intervals estimated via bootstrapping (1000 resamples). WSM: weighted-sum model; L/M/WTA: looser/median/winner takes all. (b) Individual cue contributions. Cue abbreviations defined in Table 1. (c) Top: simulation errors for pairwise combinations of considered cues. Dashed line shows the border of significant difference to the best pair (MSS and ISS). Bottom: considered cue pairs (highlighted by dots) with their respective weights (encoded by brightness).