Tc(ms) – Centre time

The centre time is the first moment of the impulse response h(t):

                                         (1)

The upper integration limits are taken as the truncation point determined in the decay curve formation, or the end of the impulse response, according to the integration option specified. If compensation for truncated energy is calculated, this is taken into account as well to increase accuracy.

Due to the time-weighting in calculating the first moment, the centre time is more sensitive to the influence of noise, and will therefore be particularly inaccurately calculated if the edr is low. To compensate for this, an analytical compensation for the truncation of the first moment is also calculated in the truncation and compensation integration option.