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The liquid in vocal fold follow a cosine distribution in the anterior-posterior direction after a stable vibration is sustained. For the region 0 < y < L/4 and 3L/4 < y < L, ΔρF is negative, which means the liquid are lost in these regions. For the region L/4 < y < 3L/4, ΔρF is positive and the maximum ΔρF is located at the midpoint of vocal fold, which means the liquid is accumulated in this region. The figures (a) and (b) are modified from the figures in reference 43.
