Speaking fundamental frequency characteristics associated with voice pathologies.

This study investigated the relationship between pathologic and normal speaking fundamental frequency characteristics (SFF) in a group of 80 male subjects. The subjects were divided into four groups of 20 (1) vocal fold paralysis, (2) benign mass lesion, (3) cancer of the larynx, and (4) normal. The results of this study indicate that SFF standard deviation and semitone range of SFF are significantly reduced for patients with vocal fold paralysis as compared with normals. The parameters of mean SFF, number of frequency shifts, and age failed to separate the normals from the three groups of pathologic subjects.