Acoustic characteristics of the statements and questions and their final syllables.

<p>Mean F₀ (in st) is the average fundamental frequency of the sentence (or the final syllable); duration (in s) is the length of the sentence (or the final syllable); mean intensity (in dB) is the mean-energy intensity of the sentence (or the final syllable); pitch range (in st) is defined as the difference in fundamental frequency between maximum and minimum F₀ of the sentence; glide size (in st) is the pitch excursion size of the final syllable ( = maximum F₀−minimum F₀); glide time (in s) is the duration between maximum and minimum F₀ of the final syllable; glide rate (in st/s) = glide size/glide time; <i>μ</i> = mean; <i>σ</i> = standard deviation; <i>t</i> is the statistic of the paired <i>t</i>-test (two-tailed, <i>df</i> = 19).