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Table 1 Information about the four test rooms

From: Speech intelligibility improvement in noisy reverberant environments based on speech enhancement and inverse filtering

Room type Room size (m) Volume (m3) Temperature (°C) T 60
(s)
Length Width Height
Anechoic chamber 8.4 7.2 6.0 363 22.7 < 0.08
Small classroom 8.5 7.5 3.2 204 23.2 0.65
Large classroom 12.0 9.0 3.2 346 23.4 1.39
Hall 16.5 11.5 9.0 1708 22.8 3.57