In patients with extrapyramidal diseases speech disturbances (dysarthria) are frequent. Dysarthria could have hypokinetic-hypertonic or hyperkinetic-hypotonic pattern. The frequency of them hesitates from 70 to 100% in patients with extrapyramidal symptoms. Clinimetric analysis of type and severity of dysarthria could be done by means of different scales useful in extrapyramidal diseases; Webster--Score Disability Rating Scale, Columbia Rating Scale or North Western University Disability Scale. The results obtained in these scales are subjective. Computer speech analysis could be useful in identification of speech disturbances. The waveforms and spectograms are used in assessment of speech intensity and frequency. The authors indicated to the usefulness of computer acoustic analysis in evaluations of speech disturbances in patients with extrapyramidal diseases as a repeatable and precise method.