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Mean perceptual ratings for each voice type. Mean overall score and mean breathiness score are given for each type with error bars representing standard error (n=10). An ANOVA on ranks detected significance for both scores (H=30.767, 3 d.f., p<0.001 for overall grade and H=31.172, 3 d.f., p<0.001 for breathiness). Pairwise comparisons found significance for type 1 and type 4, type 2 and type 4, and type 1 and type 3.
