A command available in the Query submenu if you select a Sound object. The Info window will show the mean amplitude (sound pressure in Pascal) within a specified time range.

Setting

Time range (s)

the time range (t₁, t₂). Values outside this range are ignored. If t₁ is not less than t₂, the entire time domain of the sound is considered.

Mathematical definition

The mean amplitude between the times t₁ and t₂ is defined as

where x(t) is the amplitude of the sound in Pa.