Table 1 Parameters of each sub-band in CI filter bank and the corresponding adjusting coefficients
From: Real-time spectrum estimation–based dual-channel speech-enhancement algorithm for cochlear implant
Band edge (Hz) | Center frequency (Hz) | Adjusting coefficient | |
|---|---|---|---|
Channel 1 | [156, 276] | 216 | 12.5294 |
Channel 2 | [276, 410] | 343 | 7.8934 |
Channel 3 | [410, 560] | 485 | 5.5861 |
Channel 4 | [560, 730] | 645 | 4.2047 |
Channel 5 | [730, 922] | 826 | 3.2883 |
Channel 6 | [922, 1138] | 1030 | 2.6428 |
Channel 7 | [1138, 1380] | 1259 | 2.1685 |
Channel 8 | [1380, 1653] | 1517 | 1.8071 |
Channel 9 | [1653, 1960] | 1807 | 1.5255 |
Channel 10 | [1960, 2305] | 2133 | 1.2135 |
Channel 11 | [2305, 2694] | 2500 | 1.1217 |
Channel 12 | [2694, 3131] | 2913 | 0.9752 |
Channel 13 | [3131, 3623] | 3377 | 0.8557 |
Channel 14 | [3623, 4176] | 3840 | 0.7578 |
Channel 15 | [4176, 4798] | 4487 | 0.6781 |
Channel 16 | [4798, 5498] | 5148 | 0.6141 |