Noise and acoustic conditions of premises for hearing-impaired people in Korea

Cheol-Ho Jeong, Wan-Ho Cho, Ji-ho Chang, Sung-Hyun Lee, Chang Wook Kang, Jin Gyun Park

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Hearing-impaired people need more stringent acoustic and noise requirements than normal-hearing people in terms of speech intelligibility and listening effort. Multiple guidelines recommend a maximum reverberation time of 0.4 s in classrooms, signal-to-noise ratios (SNRs) greater than 15 dB, and ambient noise levels lower than 35 dBA. We measured noise levels and room acoustic parameters of 12 classrooms in two schools for hearing-impaired pupils, a dormitory apartment for the hearing-impaired, and a church mainly for the hearing-impaired in the Republic of Korea. Additionally, subjective speech clarity and quality of verbal communication were evaluated through questionnaires and interviews with hearing-impaired students in one school. Large differences in subjective speech perception were found between younger primary school pupils and older pupils. Subjective data from the questionnaire and interview were inconsistent; major challenges in obtaining reliable subjective speech perception and limitations of the results are discussed.
Original languageEnglish
JournalNoise Control Engineering Journal
Volume69
Issue number1
Pages (from-to)77-85
ISSN0736-2501
DOIs
Publication statusPublished - 2021

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