中文说明： 完整的基于HMM的语音识别系统，进行逐步线性回归，用于信号特征提取、信号消噪，比较了软阈值，硬阈值及当今各种阈值计算方法,计算十字叉丝的在不同距离的衍射图像,在matlab环境中自动识别连通区域的大小。
English Description：
Complete HMM based speech recognition systems, stepwise linear regression, used for signal feature extraction, signal denoising, soft thresholding, hard threshold and the current method of calculating the various thresholds, cross wire to calculate the diffraction images at different distances, in the MATLAB environment, automatic identification connected region size.