HYPOACUSES
\hˌa͡ɪpə͡ʊɐkˈʌzɪz], \hˌaɪpəʊɐkˈʌzɪz], \h_ˌaɪ_p_əʊ_ɐ_k_ˈʌ_z_ɪ_z]\
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A condition in which the sense of hearing, although defective, is functional with or without a hearing aid. The hearing loss may affect one or both ears. The normal hearing level for speech is approximately 40-70 decibels I.S.O. (International Organization for Standardization) or 30-60 db A.S.A. (American Standards Association).
By DataStellar Co., Ltd
