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(A) Listener-derived clusters plotted in the perceptual space created by the first two dimensions derived by multidimensional scaling (Dimension 1 [D1] and Dimension 2 [D2]). (B) Listener-derived clusters plotted in the perceptual space created by D1 and Dimension 3 (D3). (C) Listener-derived clusters plotted in the perceptual space created by D2 and D3.
