表 2. Performance comparison of different de-noising thre shold functions.
不同阈值去噪方法效果对比结果
| 阈值函数去噪方法 | SNR/db | RMSE | 平滑度 |
| 硬阈值函数去噪方法 | 37.341 | 5.634 | 0.293 3 |
| 软阈值函数去噪方法 | 37.928 | 5.218 | 0.241 0 |
| 改进阈值函数去噪方法 | 39.658 | 3.643 | 0.196 7 |
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