This paper studies the algorithm of sub-band average-energy and the variance of the wavelet coefficients in speech endpoint detection

which were on the basis of the principle of Wavelet transform and Multi-resolution Analysis.It also optimizes the two algorithms.The proposed algorithm applied to the endpoint detection system improves the drawback of former algorithm in Long-Running and real-time badness which makes use of the variance of speech and noise in frequency characteristics.It also overcomes the li...