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Preoperative voice parameters in study subjects
| Mean F0 (Hz) | Pitch sigma (Hz) | Jitter | Shimmer (dB) | HNR (dB) | |
|---|---|---|---|---|---|
| Mean | 221.447 | 16.791 | 0.46% | 0.582 | 19.009 |
| Median | 230.494 | 13.531 | 0.45% | 0.527 | 18.939 |
| SD | 45.981 | 14.716 | 0.177% | 0.317 | 3.939 |
| Minimum | 108.213 | 1.313 | 0.19% | 0.135 | 8.530 |
| Maximum | 282.014 | 52.513 | 0.98% | 1.882 | 27.697 |
