关键词: 语音识别, RBF神经网络, 小波神经网络

Abstract: To solve the problem that recognition rates of speech recognition systems decrease in the noisy environment presently，uses character possessing wavelet neural network which integrates the good time-field local property of wavelet transform，uses character possessing RBF neural network，which have best classification ability and recognize ability etc.This paper constructes a wavelet-RBF neural network structure using Morlet mother-wavelet as wavelet basis stead of activate function in the RBF network，adopts whole supervision algorithm and realizes a noise-robust speech recognition system based on wavelet network RBF net-work.The experiment results show that the system has better identify effect than RBF network especially has stronger Robust under noisy environment.

Key words: speech recognition, RBF neural network, wavelet neural network