The program is used to determine the reverberation time of the room T according to the Fitzroy formula. At the same time, the program determines the room total absorption A and the average absorption coefficient a_av (marked in program as alfa_av). The starting values for the calculations are the dimensions of the room and the absorption coefficients of the individual areas of the room a₁ – a₆ (marked as alfa_1 – alfa_6).

Using the program:

Enter the dimensions of the room and the values of absorption coefficients for individual surfaces in the appropriate fields of the program (alfa_1 - ceiling, alfa_2 - floor, alfa_3 - left wall, alfa_4 - right wall, alpha_5 - rear wall, alpha_6 - front wall). The entered numbers should be confirmed with the Enter key.