LG – Late lateral strength

The late lateral strength is

                                         (8)

This is a fairly new parameter, not mentioned in the standards so far, but it is believed to correlate well with subjective envelopment [J.S. Bradley and G.A. Soulodre, "Objective measures of listener envelopment," J. Acoust. Soc. Am., vol. 98, pp. 2590-2597 (1995)].

The upper integration limit in the numerator is taken as the truncation point determined in the decay curve formation for the lateral impulse response, 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.

The reference energy in the denominator is calculated just as for strength, the same options govern the calculation, and similar comments on accuracy apply, see the Strength: Settings... section. The time limits for the late lateral strength parameter can be changed if the parameter is calculated from the Calculate->User Defined menu.