Detection of voice changes due to aspiration via acoustic voice analysis

Our results suggest that the accumulation of pasty food in the vocal folds may modify vocal fold vibration and change voice quality in patients with penetration/aspiration. Several acoustic voice parameters, especially jitter, RAP, and NHR, were affected by AR. Thus, acoustic voice analysis may be helpful in making a diagnosis of AR as a supplementary tool for standard swallowing study including VFSS or fiberoptic examination.