Effects of masks on speech levels and intelligibility in university classrooms

초록

In this study, the acoustical measurements of three different masks, surgical, KF94, and N95 respirator were carried out and compared with the results obtained with no mask on a dummy head mouth simulator to understand the acoustical effects of the three masks on speech sounds. The speech intelligibility and perceived difficulty of understanding speech sounds tests were also measured using speech signals convolved with previously measured monaural impulse responses in 12 occupied university classrooms. This is the first subjective tests to investigate the acoustical effects of wearing masks on the speech intelligibility and the perceived difficulty of understanding speech sounds that reflect conditions in real classrooms in Korea. © 2022 Proceedings of the International Congress on Acoustics. All rights reserved.

키워드