FORMANT TRACKING METHOD AND APPARATUS USING RESIDUAL MODEL FOR TRACKING FORMANTS WITHOUT REDUCING TRACKING SPACE

摘要

PURPOSE: A method and apparatus for tracking formants of a voice signal using a residual model are provided to carry out formant tracking without reducing a tracking space by using a formant tracking space having different formants in different frames of a voice signal. CONSTITUTION: A formant tracking method defines a formant tracking space including a formant set to be tracked. Formants in the first frame of a voice signal are identified using the entire formant tracking space. Formants in the second frame of the voice signal are identified using the entire formant tracking space. The formants are identified by mapping the formant set into a feature vector and applying the feature vector to a model(306).