The examinated group consisted of 18 patients between the ages of 20 and 80 and a comparative group of healthy persons with similar age range. Patients suffered from hypokinetic and hyperkinetic types of movement disorders. The voice of the examined patients was recorded with high-quality digital equipment in a soundproof room in order to eliminate any undesirable factors which could negatively affect the results. First, particular sounds were isolated from the recorded voice and then they were processed (filtration and spectrum analysis). Spectrum analysis contains numerous details, thus parameterization was necessary for automatic classification.