LINEAR DISCROMINANT ANALYSIS APPARATUS AND METHOD FOR NOISY ENVIRONMENTS

摘要

The present invention relates to a linear discriminant analysis device and method considering the noise effect , a variety of noise from the input speech and noise environment model generating means for generating environmental model , a linear transformation matrix generating means for generating the linear transformation matrix generated by the noise model and environment , using the resulting linear transformation matrix to estimate the noise model to generate a new linear transformation matrix which consists of a noise model estimating means , a noise -free environment model generating means and the difference between the noise signal period in the test environment according to the learning environment and noise model estimating means based on the linear transformation matrix generating means in accordance with the noise -free signal interval class data by reflection , the difference between the different noise classes can be reduced to reflect the improved performance linear discriminant analysis transform matrix .