hi

i have calculated the statistical reverberation time in ecotect.

Volume: 41.050 m³
Surface Area: 73.430 m²
Occupancy: 2 (2 x 100%)
Optimum RT (500Hz - Speech): 0.38s
Optimum RT (500Hz - Music): 0.85s

Volume per Seat: 20.525 m³
Minimum (Speech): 3.70 m³
Minimum (Music): 7.36 m³

TOT. EMPTY 50% FULL
FREQ. ABS. RT(60) RT(60) RT(60)
63Hz: 14.077 0.41 0.40 0.40 sec
125Hz: 15.646 0.32 0.32 0.32 sec
250Hz: 19.897 0.22 0.22 0.21 sec
500Hz: 25.034 0.14 0.14 0.14 sec
1kHz: 31.027 0.14 0.14 0.14 sec
2kHz: 37.019 0.09 0.09 0.09 sec
4kHz: 32.370 0.12 0.12 0.12 sec
8kHz: 28.964 0.13 0.13 0.13 sec
16kHz: 24.573 0.15 0.15 0.15 sec

how is the optium data for speech and music calcualted...please help