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. Author manuscript; available in PMC: 2015 Feb 5.
Published in final edited form as: Folia Phoniatr Logop. 2014 Feb 5;65(4):214–220. doi: 10.1159/000355867

Table 3.

Group means and standard deviations for F2 slope metrics (Hz/ms) are reported. Speaker sex is denoted in Group codes (F=females; M=males).

Measure Group Habitual Clear Loud
Maximum F2 /ɑɪ/ CF 16.8 (3.7) 17.3 (4.9) 16.7 (3.2)
PDF 13.0 (2.6) 14.3 (2.9) 12.9 (3.1)
CM 10.7 (1.3) 11.9 (1.3) 11.1 (1.3)
PDM 9.8 (1.9) 11.1 (1.9) 10.0 (1.6)
Average F2 /ɑɪ/ CF 8.8 (1.2) 8.5 (1.5) 7.8 (.9)
PDF 6.6 (1.3) 6.9 (1.0) 6.7 (1.0)
CM 6.6 (.8) 6.6 (.6) 6.4 (.7)
PDM 5.6 (1.0) 6.2 (.9) 5.8 (1.2)
Maximum F2 /ɔɪ/ CF 23.4 (6.3) 23.0 (5.0) 22.8 (7.5)
PDF 15.8 (6.1) 17.7 (5.9) 15.2 (4.0)
CM 12.7 (2.0) 14.7 (3.0) 13.7 (2.5)
PDM 11.8 (2.5) 12.9 (3.2) 11.5 (2.3)
Maximum F2 /ɔɪ/ CF 10.3 (1.9) 10.3 (2.0) 9.6 (2.1)
PDF 7.5 (1.7) 7.8 (2.4) 7.7 (1.5)
CM 7.2 (1.1) 7.3 (1.1) 6.7 (1.0)
PDM 5.9 (1.0) 6.6 (1.2) 5.8 (1.0)