Word: loudnesses
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...hear speech, and more than 30% of Americans over age 20 - an estimated 55 million people - have lost some high-frequency hearing, according to a new study published Monday in the Archives of Internal Medicine. The finding has got experts - and concerned parents - wondering anew: Does listening to loud music through headphones lead to long-term hearing loss? Brian Fligor, director of diagnostic audiology at Children's Hospital Boston, explains how much damage your headphone habit might cause - and how to mitigate your risk...
...that would eventually put their hearing at risk. On the subway system here in Boston, the ambient noise levels are very comparable to the level on an airplane, although it sounds very different. The noise is sufficiently high that it induces people to listen to their headphones at excessively loud volume...
...listen a total of two hours a day, five days a week, our best estimates are that the people who have more sensitive ears will develop a rather significant degree of hearing loss - on the order of 40 decibels (dB). That means the quietest sounds audible are 40 dB loud. Now, this is high-pitched hearing loss, so a person can still hear sounds and understand most speech. The impact is going to be most clearly noted when the background-noise level goes up, when you have to focus on what someone is saying. Then it can really start...
There is huge variation in how people are affected by loud sound, however, and this is an area where a number of researchers are conducting studies. Certainly a huge part of this is underlying genetics. We know how much sound causes how much hearing loss based on studies that were conducted in the late '60s and early '70s, before employers were required to protect workers' hearing in noisy work environments. What was found is that when people are exposed to a certain level of noise every day for a certain duration, they're going to have a certain degree...
...January, says Mosley has helped BDSM practitioners realize they have a community and that they shouldn't remain silent when others deem their practices sick and unusual. "Max Mosley has stood up for himself," she told TIME. "And that's inspired other people in the community to talk out loud about their experiences...