Abstract
The purpose of this work was to develop an optimized algorithm for determining the closed quotient (CQ) measurements of the vocal folds of female singers. This study extends previous results which showed that the measurement algorithm for differentiated electroglottograph (dEGG) signals and differentiated audio (dAUDIO) signals gave moderately reliable results with a correlation coefficient of r = 0.79. Additional performance studies indicate that the reliability may be improved by combining the differential signals and modifying the measurement algorithm to reduce the amount of signal overlap. Preliminary results using the modified measurement algorithm yield a significant increase in the correlation coefficient (r = 0.83). This works contributes to the development of a computational framework for determining accurate and reliable measurements for characterizing register shifts through an octave in female singers using electroglottography.
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