Specific loudness of the auralization result for Scenario 4 using a 1 kHz sinusoidal signal as input. Only the direct sound and the sound propagation effects spreading loss and Doppler effect are considered during the auralization. Furthermore, no spatialization is applied (e.g. convolution with HRTFs). For the real-time results, different interpolation methods are applied to the propagation delay. Note, that the higher bark bands (18-24) are not shown, since they do not contain significant energy. (a) Offline auralization; (b) Real-time/linear interpolation; (c) Real-time/cubic spline interpolation; (d) Real-time/sample-and-hold interpolation.