Glottal area versus glottal volume-velocity

We are examining the feasibility of detecting a laryngeal pathology by indirect means. In particular, is it possible to detect a laryngeal pathology by processing speech (or a phonation)? As part of this study we determine the glottal volume-velocity by a method similar to the pitch-synchronous technique and by linear predictive inverse filtering which we then compare to the glottal area function measured from ultra high speed films of the larynx. We illustrate our findings for both normal and pathological cases.