国外：MP3带来的听力损失的风险

优利康技术 · 发表于 2009-7-14 18:21

MP3带来的听力损伤的风险

数以百万计的人士日常生活中经常使用MP3来聆听音乐，但是这种流行的随身听常常会损伤很多人的听力，尤其是年轻一族。

MP3播放器的出现使得相比既往任何时候更容易聆听音乐，但是，根据最近的研究，日常生活中持续聆听带来的噪声水平依然会损害到听力系统。
在一次澳大利亚的相关研究中，学者们随机抽查了墨尔本和悉尼市大街上使用随身听的55位人士，研究员用借来的音乐播放器测量播放时的声音响度水平，他们发现25%的回答者在噪声中使用他们的音乐播放器达到听力损伤的危险境地。平均噪声水平大概是79.8dB。
年轻人处于危险境地
MP3播放器在年轻人中相当流行，英国RNID听力组织调查了年龄在18-24岁的MP3使用者，细节如下：
他们发现39%的年轻人使用他们的随身听每天大概一个小时或更长。42%意识到他们聆听音乐的音量水平过高。66%报告称他们经常听到铃声或嘶嘶噪声，按照研究者的说法，这应该是聆听随身听音量太高的第一个提示。
RNID发现研究结果有些麻烦，该组织近来发起“不要迷失音乐活动”。
长时间过高聆听会造成人们的永久性听力损伤，RNID的“不要迷失音乐活动”是让人们对听损风险有清醒的认识同时又能享受到音乐。
“大街上可以购买到配有保护性装置的耳机，随身听中突发的噪声可以被抑制。”Brian Lamb，RNID的新闻主管，在一次新闻稿中阐述。
来源：RNID的研究中显示在MP3播放器和随身听使用者中存在的听力损失的高风险。2005年5月6日。

MP3 users risk hearing damage

Millions listen to music on MP3 players on a daily basis, but the popular personal stereos cause hearing damage in high numbers of listeners, especially among young people.

MP3 players make listening to music easy wherever you are, but the noise level combined with sustained listening on a daily basis on the convenient and portabable music system can be highly damaging, according to recent studies.
In an Australian study the researchers stopped 55 random passersby with personal stereos in the streets of Melbourne and Sydney. The researchers borrowed the music players and measured the volumes at which they were played. They found that 25 percent of the respondents played their music at noise levels putting them at risk of hearing damage. The average noise exposure level was determined to be 79.8 dB.

Young people in danger zone

MP3 players are particularly popular among young people, prompting a team of researchers from the British RNID hearing organization to examine the use of MP3 players among 18-24 year-olds.

They found that 39 percent of the young adults listened to their personal stereos on an average of one hour or more per day. As many as 42 percent of the youngsters believed that they were listening to the music at excessive volumes. A full 66 percent reported that they frequently experience ringing or hissing noises in their ears. Such noises may be a first indication that the personal stereo is played too loudly, according to the researchers.

RNID finds the results of the study to be highly disturbing. The organisation recently responded with its Don’t Lose the Music awareness campaign.

”There is a danger that long-term use at high volume will permanently damage people’s hearing. RNID’s Don’t Lose the Music campaign is urging people to be aware of the risks so they can continue to enjoy music for longer. Protective filters for in ear headphones are available from many high street stores and regular breaks should be taken from listening to personal stereos,” said Brian Lamb, Director of Communications at RNID, in a press release.

Sources: “RNID research reveals huge risk of hearing loss amongst MP3 player and personal stereo users”, May 16, 2005, www.rnid.org.uk, and “Personal Stereo Noise Exposure”, www.nal.gov.au.