4th International Conference on Spoken Language Processing
Philadelphia, PA, USA
Dysphonic voices were used to compare electroglottographic (EGG) and acoustic measures of fundamental frequency (F0) and jitter using a wavematching and an event-based technique. Continuous speech was considered in the first pan of the study, where the effects of pre-filtering the acoustic signals and linearly smoothing [he F0 contours were analysed. The second pan of the investigation compared jitter from sustained vowels (/i/, /a/, /a/), resulting in poor agreement for HI and Ai/. In W vowels, however, a relatively small mean normalised absolute difference (10.95%) was obtained with a method that is being proposed, which combines peak-picking and zero crossings, being able to detect a waveform pattern observed in such vowels and reject unreliable measures.
Bibliographic reference. Vieira, Maurílio N. / McInnes, Fergus R. / Jack, Mervyn A. (1996): "Robust F0 and jitter estimation in pathological voices", In ICSLP-1996, 745-748.