Title :
Robust F0 and jitter estimation in pathological voices
Author :
Vieira, Maunlio N. ; McInnes, Fergus R. ; Jack, Mervyn A.
Author_Institution :
Dept. of Electr. Eng., Edinburgh Univ., UK
Abstract :
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 part of the study, where the effects of pre filtering the acoustic signals and linearly smoothing the F0 contours were analysed. The second part of the investigation compared jitter from sustained vowels (/i/ /a/, /u/), resulting in poor agreement for /i/ and /u/. In /a/ 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
Keywords :
acoustic signal processing; bioelectric potentials; jitter; speech; F0 contours; acoustic measures; acoustic signals; continuous speech; dysphonic voices; electroglottographic measures; event based technique; fundamental frequency; jitter estimation; mean normalised absolute difference; pathological voices; peak picking; robust F0 estimation; sustained vowels; unreliable measures; waveform pattern; wavematching; zero crossings; Acoustic measurements; Acoustic waves; Algorithm design and analysis; Band pass filters; Filtering theory; Frequency; Jitter; Pathology; Robustness; Speech analysis;
Conference_Titel :
Spoken Language, 1996. ICSLP 96. Proceedings., Fourth International Conference on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-3555-4
DOI :
10.1109/ICSLP.1996.607469
