First International Conference on Spoken Language Processing (ICSLP 90)
We examined simultaneously measured EGG and glottal flow waveforms of 20 male subjects and found characteristic details which we tried to interpret in terms of a parametrical model of the glottal geometry [1,2], We came to the conclusion that it is possible to simulate either EGG or glottal flow adequately, but that it is impossible to find model settings which are adequate for simulating both flow and EGG waveforms simultaneously. The simulated glottal flow waveforms showed the same kind of details as observed in real measurements, i.e. a main flow pulse followed by a smaller one while the dip in between is a function of abduction. We could explain the non-negligible flow after the lower parts of the vocal folds have come into contact, by assuming that it consists of two components. One flow component arises when glottal leakage is combined with vertical phasing [3,4], The other component was identified as squish flow.
Bibliographic reference. Cranen, Bert (1990): "Interpretation of EGG and glottal flow by means of a parametrical glottal geometry model", In ICSLP-1990, 65-68.