Certain aspects of the contacting and decontacting phases of the vocal folds can be analyzed indirectly through the electroglottographic (EGG1) signal. Since 19571 EGG has been widely used in the clinic and in voice research given that it provides information regarding the contact area of the vocal folds during phonation2. Its main quantitative parameters: contact quotient [3–9], open quotient [3,4,10–12] and fundamental frequency estimation [13–17] have been widely used in research studies and in the voice clinic.
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