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Objective To investigate the relationship between (a) oscillatory onset/offset time across various approaches that use different measurement criteria and (b) oscillatory onset and offset times in vocally healthy young adults. Method Oscillatory onset/offset times were obtained from 71 vocally normal adults with high-speed videoendoscopy. Comparisons between the different onset methods involved measurement of the oscillatory onset time (OOT), voice initiation period (VIP), and the phonation onset method (POT) and for offset methods involved computation of the Oscillatory Offset Time (OOToff) method and the phonation offset time (POToff). Results Correlation of the OOT with the VIP was 0.240 (p = .04) & with the POT form glottal area waveform (GAW) was 0.248 (p =.04); however correlation between the VIP and POT GAW was 0.661 (p < .001). For offset there was a moderate correlation (rS = 0.503, p < 0.001) across OOToff and VOPoff. The onset time was longest for the OOT followed by the VIP and the POT. There was no correlation between onset and offset for all methods. Conclusions A framework for quantification of oscillatory onset/offset time was developed for /hi/ tasks, which can be used for future measurements of disordered voice. A positive relationship was observed between VIP & POT and between OOToff and VOPoff. There was a nonlinear relationship between the OOT and the VIP, POT measures. Onset/offset times are strongly influenced by the calculation method used, the pros and cons of which are discussed in this paper. Vibratory onset and offset represent physiologically different phenomena.