Recognition of vowels using glides based on a nonlinear transformation

We believe that the glide part of a vowel sequence includes the phonetical quality of the previous and following vowels. Therefore, the positive use of glide parts may be effective for developing a speech recognition system. The trajectories of a glide in a feature space for a speech recognition system have the form of a curve. In this paper, we propose the transformation of trajectories of glides into a straight line in a low-dimensional space, and we show the effectiveness of our new recognition method using nonlinear transformation of a vowel sequence.