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Table 1
Description of the six test rooms. The reverberation time (T20) and clarity indices for speech (C50) were averaged across the 500 Hz and 1 kHz octave bands. T20 and C50 values were averaged over twelve transducer-receiver combinations. For C50 the standard deviation (SD) across different measurement positions is given.
| Room | Dimensions (l × w × h) (m) | Volume (m3) | T20 (s) | C50 (dB) | |
|---|---|---|---|---|---|
| Mean | SD | ||||
| LB anechoic | 4.3 × 4.6 × 2.4 | 47.47 | <0.05 | ||
| OL anechoic | 3.5 × 3.1 × 2.1 | 77.18 | <0.05 | ||
| LB room 1 | 2.6 × 3.6 × 2.5 | 23.40 | 0.10 | 30.6 | 2.5 |
| OL room 1 | 2.4 × 2.4 × 2.2 | 12.67 | 0.11 | 28.2 | 1.3 |
| LB room 2 | 4.8 × 3.3 × 2.4 | 38.02 | 0.24 | 13.2 | 1.3 |
| OL room 2 | 3.9 × 4.0 × 2.5 | 39.00 | 0.11 | 28.7 | 2.0 |
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