对数字信号进行硬阈值处理后的信号和软阈值处理后的信号-Of digital signal processing hardware threshold signal and soft-thresholding of the signal after treatment

优化小波阈值，对硬阈值和软阈值的改进，通常用于语音信号增强，去噪-Optimization of wavelet threshold, the hard threshold and soft threshold improvement, commonly used in speech signal enhancement and denoise