Preferred listening levels of mobile phone programs when considering subway interior noise
Preferred listening levels of mobile phone programs when considering subway interior noise
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DOI：
10.4103/1463-1741.174383
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发表时间：
2016-01-01
期刊：
影响因子：
0.7
通讯作者：
Han, Woojae
中科院分区：
文献类型：
--
作者：
Yu, Jyaehyoung;Lee, Donguk;Han, Woojae
今天，人们用个人收听设备大声听音乐。虽然大多数研究报告称，在这些收听设备上播放高音量会产生听力问题的潜在风险，但缺乏关于环境噪音和娱乐噪音等“双重噪音暴露”的研究。本研究测量了5个年龄段(20-60岁)的74名听力正常的参与者对地铁内噪音手机节目的偏好听力水平。每个受试者用带耳机的平板电脑听三个应用程序[数字多媒体广播(DMB)、音乐、游戏]，时间为30分钟。参与者的耳机音量水平使用声级计和2CC耦合器进行分析。总体而言，结果显示，20多岁的人听这三个节目的声音明显更大，DMB的音量设置明显高于其他节目。与低频和高频相比，中频需要更高的音量。我们的结论是，手机用户任何潜在的噪音导致听力损失的风险都应该在用户定期收听时进行沟通，尽管音量水平还没有高到让用户感到不舒服。在考虑个人在手机上的收听习惯时，仍需要进一步研究以预测总累积环境噪声。
Today, people listen to music loud using personal listening devices. Although a majority of studies have reported that the high volume played on these listening devices produces a latent risk of hearing problems, there is a lack of studies on "double noise exposures" such as environmental noise plus recreational noise. The present study measures the preferred listening levels of a mobile phone program with subway interior noise for 74 normal-hearing participants in five age groups (ranging from 20s to 60s). The speakers presented the subway interior noise at 73.45 dB, while each subject listened to three application programs [Digital Multimedia Broadcasting (DMB), music, game] for 30 min using a tablet personal computer with an earphone. The participants earphone volume levels were analyzed using a sound level meter and a 2cc coupler. Overall, the results showed that those in their 20s listened to the three programs significantly louder with DMB set at significantly higher volume levels than for the other programs. Higher volume levels were needed for middle frequency compared to the lower and higher frequencies. We concluded that any potential risk of noise-induced hearing loss for mobile phone users should be communicated when users listen regularly, although the volume level was not high enough that the users felt uncomfortable. When considering individual listening habits on mobile phones, further study to predict total accumulated environmental noise is still needed.