A Tentative Algorithm for Estimating the Glottal Waveform with Glottal Closure Information

摘要

It is known that the glottal waveform includes acous- tic information on the individuality of speakers, and that the inverse filtering method is useful in extracting glottal wave- form from speech signals. In conventional methods, stationary analysis is per- Formed for the duration of a few pitches. Short-time analy- Sis with the drawback of unstable estimation, is performed For one pitch duration. We propose a new method of inverse filtering by Using the estimation algorithm for the vocal tract transfer Function; the analysis is performed stably for each pitch Using the mapping algorithm with the Fejer kerne.