Contact Quotient Versus Closed Quotient: A Comparative Study on Professional Male Singers

摘要

Objectives. The term "closed quotient'' is frequently used for data derived both from inverse filtering and from electroglottography. In the former case, it is defined as the ratio between the closed phase and the period, as measured in flow glottograms (FLOGG), whereas in the latter case, it is defined as the time interval between the falling and rising parts of the electroglottogram (EGG), measured at some percentage of the peak-to-peak amplitude. The study aims at analyzing differences between EGG-and FLOGG-based closed quotients and their relationships with voice source parameters.