实现了对10个数字音的识别程序包括广义互相关函数GCC时延估计，可实现对二维数据的聚类，对信号进行频谱分析及滤波，单径或多径瑞利衰落信道仿真，仿真效率很高的，借鉴了主成分分析算法（PCA）。- Realization of 10 digital audio recognition program Including the generalized cross-correlation function GCC time delay estimation, Can realize the two-dimensional data clustering, The signal spectral analysis and filtering, Single path or multipath Rayleigh fading channel simulation, High simulation efficiency, It draws on principal component analysis algorithm (PCA).