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J Occup Health year 2008 volume 50 number 2 page 194 - 196
Classification Short Communication
Title Earplug-Type Earphone with Built-in Microphone Improves Monosyllable Intelligibility in Noisy Environments
Author Tomo Nakao1, Seichi Horie1, Takao Tsutsui1, Shoko Kawanami1, Naoko Sasaki1 and Jinro Inoue2
Organization 1Department of Health Policy and Management, Institute of Industrial Ecological Sciences and 2Bio-information Research Center, University of Occupational and Environmental Health, Japan
Keywords Earplug, Earphone, Microphone, Occupational noise, Hearing loss, Ear protective devices, Speech intelligibility