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ORIGINAL ARTICLE
Commun Sci Disord. 2011;16(3): 408-415.
Effects of Earphone Style and Noise Environment on Listening Levels when Using Portable Music Players in the Laboratory
Kun Woo Kim` , Jae Yun Jung` , and Myung-Whan Suh`
Copyright ©2011 The Korean Academy of Speech-Language Pathology and Audiology
김건우(Kun Woo Kim)| 정재윤(Jae Yun Jung)| 서명환(Myung-Whan Suh)
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ABSTRACT

Background & Objectives
Recently, the widespread use of portable listening devices (PLD) has increased concern about juvenile noise-induced hearing loss. When a PLD is used in noisy environments, the user will listen to louder music than usual. In this study, we aimed to evaluate the influence of earphone style on preferred listening levels (PPLs). Furthermore, we assessed which type of earphone is least damaging to the inner ear.
Methods
There were two independent variables in this study: earphone style (ear-bud, ear-canal, and on-the-ear) and noise environment (quiet, street noise, and talking noise). Twenty-five participants listened to the same song with different earphone styles in different noise environments. The participants controlled the PLD volume switch as they wished, and the PPL was recorded with the Real Ear Measurement system.
Results
In the quiet environment, the ear-bud earphone and ear-canal earphone had similar PLL values. However, in the street noise and talking noise environments, the ear-canal earphone had the lowest PLL and the on-the-ear earphone had the highest PLL. The PLL was lowest in the quiet environment and highest in the talking noise environment. Discussion & Conclusions: The ear-canal earphone style seems to be the best earphone style for providing comfortable music listening with the lowest sound pressure level.
Keywords: 휴대용 음향기기 | 소음성 난청 | 선호청취크기 | 이어폰 | 소음 환경 | portable listening devices | noise-induced hearing loss
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