FIGURE 8.

Slopes in dB/octave (left ordinate) of the experimentally derived EGG-spectra (circles, filled in orange) and the computed particle velocity $v_g^{\mathit{sound}}$ at the glottis (circles, filled in blue). These quantities are shown for all voice qualities, vowels, and pitch values (see abscissa). Additionally, the Index of contacting I _c , limited by zero and one (corresponding to the right ordinate), is highlighted with white bars. The results for two vowels (/aː/ and /iː/) and the pitch values are filled separately with different shades of orange.