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Electroglottography and laryngeal articulation in speech
1Department of Otolaryngology, Medical School, Chonbuk National University, Republic of Korea.
Summary
Electroglottography (EGG) reveals dynamic vocal fold changes during speech. This method, analyzing EGG waveforms with aerodynamic signals, offers insights into laryngeal articulatory activity.
Area of Science:
- Laryngology
- Speech Science
- Bioacoustics
Background:
- Electroglottography (EGG) is established for studying vocal fold vibration patterns during phonation.
- Understanding dynamic laryngeal behavior during continuous speech requires advanced analysis techniques.
Purpose of the Study:
- To investigate dynamic changes in Electroglottography (EGG) waveforms during continuous speech production.
- To explore the relationship between EGG parameters and aerodynamic signals in speech.
Main Methods:
- Simultaneous recording of EGG waveforms and aerodynamic signals (air pressure, airflow).
- Measurement of fundamental frequency (F0), open quotient (OQ), and baseline shift from EGG.
- Calculation of glottal airway resistance from aerodynamic data for three Korean consonant types.
Main Results:
- EGG waveforms are significantly influenced by laryngeal articulatory activities.
- Articulatory activities correlate with airflow and subglottic pressure.
- Observed relationships between glottal airway resistance, F0, OQ, and baseline shift.
Conclusions:
- EGG provides a valuable method for describing dynamic laryngeal articulatory activity during continuous speech.
- Combined EGG and aerodynamic analysis enhances understanding of speech production mechanisms.