VOCAL TRACT SPECTRUM ESTIMATION DEVICE, VOCAL TRACT SPECTRUM ESTIMATION METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To precisely estimate a vocal tract spectrum from a speech signal.SOLUTION: An estimation part 23 estimate a vocal tract spectrum Hof each normalization angular frequency of each spectrum pattern and a weight Uat each time point of each spectrum pattern so as to make small a target function represented using a distance between an observation spectrum Yand a vocal tract spectrogram X.SELECTED DRAWING: Figure 1