Acoustic characteristics of the tones in post- versus pre-focus words.

Data are means (SD). Mean F0 (in semitones, or st) is the average fundamental frequency of the tone; duration (in seconds, or s) is the length of the tone; mean intensity (in decibels, or dB) is the mean-energy intensity of the tone; Tone 1 = High; Tone 2 = Rising; Tone 3 = Low; Tone 4 = Falling.