In the presence of additive white Gaussian noise, an adaptive wavelet-based de-noising algorithm for speech enhancement applications is proposed. 针对加性高斯白噪声的情况，提出一种自适应小波降噪算法，用于语音信号的增强。
In this paper, we employ an improved minutia preserving smoothing algorithm based on solving a nonlinear diffusion equation. 但降噪算法常会因过度平滑引起图象细节特征的模糊，因此需要采用能保留细节的平滑处理算法。
