Lee Silverman Voice Treatment (LSVT) is primarily used as a voice treatment for people with Parkinson's disease (PD) and attempts to increase vocal volume and improve voice. vocal function (Ramig L, Sapir S, Fox C and Countryman S, 2001) (Countryman S, Hoehn M, O'Brien C, Pawlas A, Ramig L and Sapir S, 2001). The use of this treatment protocol has also been successful for patients with dysarthria associated with stroke and head trauma as well as children with cerebral palsy and Down syndrome (Spielman, J Ramig L Mahler L Halpern A Gavin W 2007, )R. , Theodoros, D. and Cornwell, P. (January 1, 2008), Marchant, J., McAuliffe, M. and Huckabee, M.-L. (January 1, 2008. LSVT was designed in 1987 and has since been widely studied around the world (Countryman et. al) LSVT is a very unique form of voice therapy in that it focuses on several very simple tasks designed to maximize the client's phonation and respiratory functions (Countrymen. et al.) Spielman et all2007 reported that the standard treatment was an in-depth treatment program of one hour per day, four days per week, for four consecutive weeks. The regimen boils down to overcoming perception among clients with PD. that there is nothing wrong with their speech, and to use intensive sensorimotor training to help them recognize and use increased effort and louder speech in their daily communication (Ramig, LO, Fox, C. and Sapir, S. (January 1, 2004)) Most research studies designed to test the application and success of LSVT appear to follow the same basic research methodology. Clients with PD are recruited into local support groups, through local support groups. newspaper advertisements or contact with specialists in other related medical fields. (Countryman et al. 2001) (Ramig et al. 2001). The normal method of testing appears to be randomized control group studies, with clients separated into groups who receive LSVT or receive no voice-related therapy, or groups who receive more traditional, less intense forms of voice therapy or respiratory (Ramig et al 2004). )(Ramig et al 2001) (Countrymen S. 2001) (Constantinescu, G., Theodoros, D., Russell, T., Ward, E., Wilson, S. and Wootton, R. (January 1, 2011) The groups Controls can be further divided into age and gender categories. Firstly, customers' sound pressure levels are measured to establish a baseline reference point...