Agreement between Transcription- and Rating-Based Intelligibility Measurements for Evaluation of Dysphonic Speech in Noise.

Dysphonia negatively affects a speaker's intelligibility, especially in noisy environments. Previously, our study showed this effect of dysphonia with the transcription-based intelligibility measurement. While this finding indicates the importance of intelligibility assessment for this population, implementing the transcription-based measurement may be difficult in clinical settings due to its resource-demanding nature.

Perception and Acoustic Studies of Vowel Intelligibility in Dysphonic Speech.

Purpose: This study aimed to (1) examine the effect of dysphonia and background noise on the identifiability of vowels, and (2) evaluate the relationship between the degree of vowel intelligibility and vowel-related acoustic measurements.

Method: A speech perception experiment was conducted with speech samples collected from 10 adult females with healthy voices and 10 adult females with dysphonia. The speech material was 11 vowels of American English in /h/-vowel-/d/ format.