Perceptual Evaluation of Elderly Speech by General Adults: Focusing on Speech Intelligibility, Listening Ease, and Speech Acceptability

Objectives

This study aimed to investigate the perceptual speech characteristics of healthy older adults by comparing speech intelligibility, listening ease, and speech acceptability across speakers in their 60s, 70s, and 80s. Furthermore, the study examined the relative influence of voice quality and prosody on overall speech acceptability to provide an evidence-based foundation for age-tailored clinical interventions.