Askar - 130520

works finished: 1. extracted MFCC parameters(MFCC_0_D_A) and working on training UBM. 2. almost finished reading tutorial--A Gentle Tutorial of the EM Algorithm and its Application to Parameter Estimation for Gaussian Mixture and Hidden Markov Models. work plan: 1. train models basend on MFCC parameters(MFCC_0_D_A) and compare with the previous experiment results. 2. finish the reasing of the tutorial.