Table 3.

Spearman rank order correlation results are reported.

Speaker	Articulatory Rate (syll/sec)	Mean F0 (Semitone)	F0 SD (Semitone)	F0 Range (Semitone)	Mean SPL (dB)	SPL SD (dB)	F2 IQR (Hz)
PDM07	0.370	0.055	−0.139	−0.127	0.261	−0.115	−0.091
PDF01	−0.152	0.103	0.091	0.055	0.164	0.370	0.067
PDM01	0.018	−0.503	0.479	0.527	−0.030	0.292	0.139
PDM06	−0.794*	0.806*	0.491	0.442	0.188	0.134	0.673*
PDM08	−0.576	0.176	−0.515	−0.176	0.018	0.127	0.503
PDF05	−0.115	−0.442	0.418	0.503	−0.238	0.042	−0.321
PDF04	0.430	−0.333	0.127	0.103	0.559	−0.243	0.236
PDF06	−0.212	−0.030	0.127	0.321	0.012	−0.043	−0.006
PDM04	0.195	−0.517	0.109	0.334	0.128	−0.571	−0.195
PDM03	0.333	0.636*	0.188	0.224	0.285	−0.115	0.709*
PDM02	0.115	−0.285	0.321	0.115	0.006	0.366	0.358
PDF08	0.091	0.139	0.188	−0.152	0.188	0.049	0.091

F0 Range = 90th percentile minus 10th percentile. Alpha level 0.05.

Results summarize the association between acoustic variables and scaled sentence intelligibility within speakers. The sign of the correlation indicates the direction of the association. Bold text indicates correlations of 0.30 or greater and an asterisk indicates significant correlations (ρ<0.05). Speakers are listed from least intelligible (PMD07) to most intelligible (PDF08).