"LSVT LOUD improves communication by helping you speak with a voice and volume that's easy for others to hear and understand. The treatment is built on tailored exercises that strengthen the voice box (larynx) and speech system. " - LSVT Global. This treatment was created for patients with Parkinson's Disease and other neurological disorders affecting voice and loudness. Treatment is formatted into 16 - one-hour sessions (4x week / 4 weeks).