Figure 9From: A novel technique for fetal heart rate estimation from Doppler ultrasound signal Shift increment selection. The mean absolute error of interval measurement ∣ Δ T i ∣ ¯ as a function of window shift increment S (from 1/2 to 1/15) obtained for five different lengths of AF window (1.5, 2, 2.5, 3 and 4 Ti).Back to article page