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. Author manuscript; available in PMC: 2008 Apr 28.
Published in final edited form as: J Acoust Soc Am. 2005 Nov;118(5):3177–3186. doi: 10.1121/1.2047107

FIG. 1.

FIG. 1

The open circles show the GPR and VTL combinations of the stimuli used in the speaker size and sex/age categorization experiments. The circles in the top panel show the “narrower” range of (7×7) sample points (GPRs of 80, 105, 137, 179, 234, 306, and 400 Hz; VTLs of 7.8, 9.3, 11.0, 13.2, 15.7, 18.7, and 22.2 cm). The bottom panel shows the “wider” range (GPRs of 61, 87, 125, 179, 256, 366, and 523 Hz; VTLs of 6.5, 8.2, 10.4, 13.2, 16.7, 21.3, and 26.8 cm). The four ellipses show the normal range of GPR and VTL values in speech for men (M), women (W), boys (B), and girls (G), derived from the data of Peterson and Barney (1952). Each ellipse contains 99% of the individuals from the respective category.