ePGG, airflow and acoustic data on glottal opening in Korean plosives

This paper is concerned with glottal opening in the Korean lenis (/p t k/), aspirated (/p t k/) and fortis (/p’ t’ k’/) plosives, using a new non-invasive technique called external lighting and sensing photoglottograph (ePGG) as well as airflow and acoustic data. From the simultaneous recording of ePGG, airflow and acoustic data, we have investigated (a) the timing relations among glottal opening onset and peak, glottal closing onset, airflow onset and peak, and aspiration onset in relation to acoustic events such as a consonant release onset and a vowel onset; (b) how much the peak of glottal opening area, glottal closing speed and airflow peak height occur; and (c) what acoustic conditions arise in accordance with the three-way phonation contrast.