Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)
An attempt to analyse formant
movements within the cycle of vocal fold vibration
by linear prediction is presented. To
achieve a high temporal resolution the duration
of the analysis window is adjusted shorter
than the fundamental period. The measurement
noise increased thereby is counteracted
by averaging the parameter estimates by clustering.
Preprocessing by a linear band pass
filter and by polynomial regression is discussed.
The function of the method is demonstrated
by analysing a synthetic formant with
known resonance parameter contours. Then
the method is applied to the first and second
formant of the vowels [i:], [a:], and [u:]
of a male speaker. The instantaneous formant
and bandwidth contours and compared to the
electroglottographic recorded contours of vocal
fold tissue contact. An interpretation in
terms of time varying acoustic coupling of the
subglottal cavity through the larynx is proposed.
Index Terms. subglottal coupling, linear prediction, electroglottography
Full Paper (reprinted with permission from Firenze University Press)
Bibliographic reference. Wokurek, Wolfgang (2007): "Towards a temporal high-resolution formant analysis", In MAVEBA-2007, 11-14.