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GLOTTAL ESTIMATION USING A NONLINEAR ARMA FILTER

EGG, which depicts the degree of contact between vocal folds, is a measurable proxy for glottal pressure wave, and thus contains information of pitch and GCI. In this project, I proposed a TDRNN, or a nonlinear ARMA filter, that turns input speech waveforms to approximation of EGG, which can be further applied to pitch tracking or GCI location. Two baseline systems, a linear MA filter and a nonlinear MA filter, are also experimented and evaluated. Preliminary experiments have confirm the ability of the proposed system to estimate EGG, and further analysis discloses more interesting findings.