Speech transmission index variation due to ventilating and air-conditioning system in university classrooms. - Hugo C. Longoni; Sebastián P. Ferreyra; Gabriel A. Cravero; Facundo López; Manuel F. Parada; Marcos S. Díaz; Leopoldo Budde; Ana M. Moreno; Lucas Guillermo Gilberto; Oscar A. Ramos (Proc. Meet. Acoust., 2016)