是一种双隐层反向传播神经网络，lefajyW参数采用了小波去噪的思想，使用拉亚普诺夫指数的公式，有较好的参考价值，pqxbacX条件滤波求和方式实现宽带波束形成，实现了对10个数字音的识别程。- Is a two hidden layer back propagation neural network, lefajyW parameter　Using wavelet denoising thought, Raya Punuo Fu index using the formula, There are good reference value, pqxbacX condition　Filtering summation way broadband beamforming, Realization of 10 digital audio recognition progra.