Assessment of the Interdependencies Between High-Speed Videoendoscopy and Simultaneously Recorded Audio Data in...

Area of Science:

• Laryngology
• Speech Science
• Acoustic Analysis

Background:

• Investigating relationships between high-speed videoendoscopy (HSV) kymography and acoustic signals.
• Understanding vibratory dynamics in glottal pathologies across varying glottal widths.
• Correlating HSV-derived parameters with audio data for diagnostic insights.

Purpose of the Study:

• To determine the correlation between kymographic parameters from HSV and simultaneous acoustic signals.
• To assess the influence of glottal width and lesion type on these correlations.
• To evaluate the consistency of cycle detection in improving parameter correlation.

Main Methods:

• Included 192 participants: normophonic, functional, or organic glottal lesions (benign, premalignant, malignant).
• Calculated vocal fold oscillation parameters using HSV kymography at three glottal widths.
• Assessed linear correlations between HSV kymography and acoustic data, evaluating cycle detection consistency.

Main Results:

• High correlations observed for fundamental frequency (F0) (0.97) and mean Jitter (Jita) (0.40-0.70) between HSV and audio.
• Correlations improved significantly with consistent cycle detection (F0: 0.99, Jita: 0.68-0.98).
• Premalignant lesions showed high correlations (0.77-0.9) for period perturbation measures; other groups showed low to moderate correlations.

Conclusions:

• Simultaneous audio signals effectively verify HSV quantification, especially for F0.
• Discrepancies in other parameters suggest resonator influence (throat, mouth, nose) on the glottal signal.
• HSV kymography details vocal fold oscillations but doesn't fully capture 3D structure or complex vocal fold function.