A hall of (3400 +R) m³ having a seating capacity of 700. From the following data calculate the reverberation time when it is a full of audience, Consider the absorption of each member of the audience as 0.45 Sabine and neglect the effect of absorption by the performers and their instruments. а. R=30 Material (Surface) Area (m²) Abs. coefficients Plaster Celling 500+R 0.02 Plaster Walls 650+R 0.03 Wooden ( floor, doors) 450+R 0.06 Seats (cushion, cane) 500+R 0.01 Sabine / seat)

A hall of (3400 +R) m³ having a seating capacity of 700. From the following data calculate the reverberation time when it is a full of audience, Consider the absorption of each member of the audience as 0.45 Sabine and neglect the effect of absorption by the performers and their instruments. а. R=30 Material (Surface) Area (m²) Abs. coefficients Plaster Celling 500+R 0.02 Plaster Walls 650+R 0.03 Wooden ( floor, doors) 450+R 0.06 Seats (cushion, cane) 500+R 0.01 Sabine / seat)