In this study, we explored the segmental aspects of the speech production of a Brazilian parkinsonian group. Three spectral moments and vocalic space area were measured. A total of 8 subjects participated in this study, including 5 parkinsonians with dysarthria and 3 healthy subjects. The experimental task was read given sentences. For acoustic analysis, we selected the words containing the voiceless stop at word onset, followed by /a/, and the lexically stressed vowels . The results suggested that the values for all three spectral moments were higher as compared to the healthy subjects. The spectral moment distribution analysis showed that three parkinsonians were able to distinct places of articulations; two parkinsonian did not present the distinctions for place of articulation; and all the participants of the control did it. For vowel production, our results pointed to great intersubject vocalic space variability expressed by higher values for variance, in the parkinsonian group.