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. 2010 Dec;128(6):3597–3613. doi: 10.1121/1.3500693

Figure 1.

Figure 1

Corner stimuli of the target vowel matrix used for all experiments. Stimuli in the left column have the most [u]-like F2 frequency (1000 Hz, dashed arrow) and stimuli in the right column have the most [i]-like F2 frequency (2200 Hz, dotted arrow). Stimuli in the upper row have the most [i]-like tilt spectral tilt (0 dB∕oct, dotted line) and stimuli in the bottom row have the most [u]-like spectral tilt (−12 dB∕oct, dashed line).