中文说明：用于特征降维，特征融合，相关分析等,完整的基于HMM的语音识别系统，经典的灰度共生矩阵纹理计算方法，包含CV、CA、Single、当前、恒转弯速率、转弯模型，用平面波展开法计算二维声子晶体带隙,最小二乘回归分析算法。
English Description：
For the feature dimension reduction, feature integration, correlation analysis, complete with HMM-based speech recognition system and calculation method of gray level co-occurrence matrix texture classic, contains CV, CA, Single, current, constant turn rate, turned model, using the plane wave expansion method for calculation of band gap of two-dimensional phononic crystals, least-squares regression method.