Short-term interaural correlation (IC) of the reverberant target signal located at 0° depending on the time point of the signal. The parameter varied between curves is the cutting time condition of the RIR, given as truncation time in panel a (experiment 1), and as the cutting time up to which the RIRs were zeroed in panel b (experiment 2). When adding early reflections up to a truncation time of 75 ms (panel a), the IC decreases, and it remains at a constant, low value when later reflections are added. Late reflections decorrelate the fronal target signal, but the maximum decorrelation requires reflections to arrive within 150 ms (panel b).