Parkinson's disease (PD) is a neurodegenerative disorder resulting from the progressive degeneration of dopaminergic neurons in the substantia nigra pars compacta. Alongside motor symptoms like bradykinesia, tremor, and rigidity, PD is also associated with non-motor impairments, including cognitive decline, depression, sleep disorders, and autonomic dysfunctions. One of the most prevalent non-motor symptoms is the alteration of voice and speech, affecting up to 90% of PD patients. The progressive decline in vocal function can lead to hypokinetic dysarthria, reducing speech intelligibility, volume, and prosody, with a significant impact on patients’ quality of life. This study has two main objectives: (1) to distinguish between healthy individuals and those with Parkinson's disease based on vocal characteristics, and (2) to assess disease severity using Word Error Rate (WER) and Character Error Rate (CER), exploring their correlation with Unified Parkinson's Disease Rating Scale (UPDRS) scores.