Numerical experiments show that the second-generation wavelet denoising can effectively reduce the edge effect with fewer decomposition layers, making EMD more practical.

• 仿真实验表明，同等条件下用第二代小波能有效减少EMD的分解层数，提高分解效率，同时能降低边界效应的影响，使EMD更具实际应用价值。