Abstract
Voice disorders can reduce speech intelligibility. This study evaluated the effect of noise, voice disorders, and room acoustics on vowel intelligibility. College students listened to 9 vowels in /h/-V-/d/ format. The speech was recorded by three adult females with dysphonia and three adult females with normal voice quality. The recordings were convolved with three oral-binaural impulse responses with 0.4 s, 0.7 s, and 3.1 s of reverberation time. The test was performed online. The intelligibility and the listening easiness were significantly higher when the speakers had normal voice quality and in low reverberated environments.
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