Table 2.
ILDs (dB) for signals subjected to HRTFs, microphone response, pre-emphasis, and frequency decomposition via the Opus filter bank. Signals were not subjected to AGC or output compression. The center frequency of each filter is indicated beneath the channel number.
| WIDEBAND | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ch 1 | ch 2 | ch 3 | ch 4 | ch 5 | ch 6 | ch 7 | ch 8 | ch 9 | ch 10 | ch 11 | ch 12 | |
| 120 Hz | 225 Hz | 384 Hz | 579 Hz | 836 Hz | 1175 Hz | 1624 Hz | 2222 Hz | 3019 Hz | 4084 Hz | 5507 Hz | 7410 Hz | |
| 0° | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |
| 15° | 0.8 | 1.0 | 1.7 | 2.8 | 3.6 | 3.2 | 1.8 | 3.2 | 3.0 | 2.9 | 2.0 | 1.4 |
| 30° | 1.5 | 1.9 | 3.0 | 5.0 | 6.7 | 7.1 | 4.0 | 5.7 | 5.9 | 5.0 | 3.6 | 1.9 |
| 45° | 2.0 | 2.5 | 3.7 | 5.9 | 8.2 | 11.4 | 8.6 | 7.2 | 10.0 | 6.3 | 5.0 | 6.2 |
| 60° | 2.5 | 3.0 | 4.1 | 5.9 | 7.5 | 10.8 | 14.7 | 14.0 | 9.9 | 8.2 | 11.2 | 14.6 |
| 75° | 2.7 | 3.2 | 4.3 | 5.6 | 6.4 | 7.7 | 8.0 | 11.9 | 15.3 | 9.3 | 11.2 | 16.6 |
| HIGH-PASS | ||||||||||||
| 0° | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||
| 15° | 1.7 | 2.0 | 3.2 | 3.0 | 2.8 | 2.1 | 1.7 | |||||
| 30° | 4.6 | 3.7 | 5.8 | 5.9 | 4.9 | 3.6 | 2.5 | |||||
| 45° | 10.1 | 7.8 | 7.2 | 10.0 | 6.2 | 5.0 | 4.7 | |||||
| 60° | 16.5 | 13.9 | 9.9 | 8.3 | 11.1 | 12.6 | ||||||
| 75° | 7.8 | 8.3 | 12.1 | 15.3 | 9.3 | 11.0 | 14.9 | |||||
| LOW-PASS | ||||||||||||
| 0° | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | |||||||
| 15° | 0.6 | 1.0 | 1.6 | 2.1 | 2.5 | |||||||
| 30° | 1.3 | 1.8 | 2.8 | 3.7 | 4.5 | |||||||
| 45° | 1.7 | 2.4 | 3.6 | 4.5 | 5.4 | |||||||
| 60° | 2.1 | 2.9 | 3.9 | 4.7 | 5.4 | |||||||
| 75° | 2.4 | 3.2 | 4.1 | 4.7 | 5.3 | |||||||