This study was carried out in collaboration with the team of speech therapists at the Don Gnocchi Hospital in Milan, analysing the speech performance of 70 patients that suffer from MS: one group was treated with standard therapy, a second group with innovative LSVT-LOUD therapy and a third group was not treated. The recordings provided include 3 repetitions of the vowel /a/ and a free speech (about 1 min), which were provided for each patient before and after therapy. After excluding not valid recordings (saturated or too noisy), two subsets were created for the analysis of the /a/ and the free speech.