A query to the selected tier object (PitchTier, IntensityTier, DurationTier).
the area under the curve.
The curve consists of a sequence of line segments. The contribution of the line segment from (t1, f1) to (t2, f2) to the area is
|1/2 (f1 + f2) (t2 – t1)|
© ppgb, February 16, 2003