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

Settings

Time range (s)

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

Interpolation

the interpolation method (none, parabolic, cubic, sinc70, sinc700) of the vector peak interpolation. The standard is “sinc70” because a Sound object is normally a sampled band-limited signal, which can be seen as a sum of sinc functions.