Table 1
Various acoustic parameters for a comparable set of source-receiver combinations defined and measured within the three environments. In addition, room averages are calculated from a number of omnidirectional microphones and omnidirectional sources (except for the Pub, where all loudspeakers were used). Shown are the distance between source and receiver (occluded path length for the source in the adjacent kitchen of the Living room), the reverberation time, the EDT, and the DRR, in columns 3 to 6, respectively.
| Descriptor | Dist. S-R [m] | RT (T30) [s] | EDT [s] | DRR [dB] | |
|---|---|---|---|---|---|
| Under-ground | Room average | 1.68 | 0.74 | ||
| R1-S1 (Sc. 1), talker on “circle” | 1.60 | 1.11 | 0.31 | 2.7 | |
| R1-S13 (Sc. 2), talker very close | 1.01 | 1.23 | 0.01 | 5.6 | |
| R1-S15 (Sc. 2), talker somewhat distant | 4.02 | 1.25 | 0.35 | −3.2 | |
| Pub | Room average | 0.66 | 0.68 | ||
| R1-T2 (Sc. 1), talker on the same table | 0.97 | 0.67 | 0.17 | 2.8 | |
| R1-wtr (Sc. 2), „waiter” talking to listener | 0.90 | 0.92 | 0.46 | −0.4 | |
| R1-C0-4, talker at medium distance | 4.00 | 0.65 | 0.56 | −2.9 | |
| Living room | Room average (door open) | 0.56 | 0.46 | ||
| R1-SG1, loudspeaker in 1 m distance | 1.01 | 0.49 | 0.13 | 2.3 | |
| R1-S-TV (Sc. 1), television running | 2.51 | 0.49 | 0.23 | −5.6 | |
| R1-S7 (Sc. 2), talker in adjacent kitchen, occluded sound path | 5.69 | 0.60 | 0.25 |
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