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Is the iPod Generation Going Deaf?
prozac79 writes "Ars Technica and Wired News are both running interesting articles on how personal music players are a major contributor [ArsTechnica] to early hearing loss [Wired]. According the ArsTechnica article, an increasing number of people are now living in "noisy" environments that is only made worse by blocking it out with even louder music. The article also suggests that listening to music for one hour a day is considered safe. So now you have a choice... go deaf early or go insane listening to your coworkers chatter."
I have a pair of Bose Quietcomfort headphones, and I wonder if the noise cancelling is actually damaging my hearing. What do you think?
Deafness is a useful adaption to the modern working environment. A touch of deafness blocks out the computer fans, the traffic noise, the endless airplanes flying overhead, the neighbour's kids, and the wife. The only problem is that it takes more and more volume to produce that "oh, yeah!"effect when listening to music. But that's someone else's problem.
Personally, I went partly deaf at the age of 16 from spending too much time on a firing range. But most of my peers went similarly deaf not from the iPod, but from the Sony Walkman.
This story is about 25 years too late. I guess each generation reinvents the "we went deaf because..." story.
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They block outside noise by 23db, so you don't have to turn the music up to drown out the noise. I sometimes leave them in even without listening to music. They are nearly as good as a pair of headphone style hearing protectors.
http://www.etymotic.com/
It's not just mp3 players, it's car stereos (especially the 1000+ watt "boom cars") and loud exhausts. Some of the cars on the streets in my town can produce sound pressures that are actually painful -- from a distance of ten feet, in another car, with the windows up!!
Even base stereo systems these days are 60+ watts. That's enough to cause substantial hearing loss in a matter of weeks if listened to repeatedly, for an hour or more per day.
I can't even imagine how profound the boomcar boyz hearing loss must be. Not that I care... karma and all that.
Ever attended a rock concert? It's a near certainty that you did permanent damage toyour high frequency hearing.
Bring lawn tools into the equation (leaf blowers, lawn mowers, chainsaws, etc.) and that == more hearing loss.
However, it's not just the under-thirty crowd. Many of our fathers served time in the military, when hearing protection meant sticking your finger in your ear before the guy next to you threw a grenade or fired a 30.06. Hearing loss didn't mean shit when your biggest concern was not being shot on a beach landing. The difference is the genX'ers are *choosing* to damage their hearing.
Noise cancelling headphones if correctly implemented are rather more complex than just inserting an inverted signal. For the record, I am deaf (artillery and large engines, as if you care) and because of the strange hole in my hearing response I use a digital hearing aid. The configuration screen for programming this runs to a number of pages, and I can have it set to include or exclude things like refrigerator and fan noise. In fact, I have one program that does optimised noise cancelling to get the best speech response, and another that does no noise cancelling which is useful for music and for checking that things like HDDs are making the right noises.
Noise cancelling technology is already used in professional telephone headsets, and I am surprised that it is missing from iPods and the like. It would be easy enough to have a button which switched between cancelling and not cancelling external noise sources and which, like my hearing aid, has a setting which allows through a sudden loud noise when in N/C mode, as a safety factor in traffic. This would mean the ability to listen at lower volume levels in noisy conditions.
I have a local inductive loopset (one of the few good things to come out of Nokia in my view) which allows me to use the cell phone and to inject another sound source. With the hearing aid switched to inductive pickup only, and to block external sound, I can make a phone call in noisy conditions without difficulty.
Conclusion: the technology exists to fix these problems and enable people to listen at lower volumes, manufacturers just can't be bothered.
Panurge has posted for the last time. Thanks for the positive moderations.
I've been thinking about this for years, in a minor way off and on, and I'm still waiting for someone to invent a good feedback system for hearing level. If the music can be heard clearly at 80-85db, thenit is probably safe, right? However, all the studies I've seen measure db in the environment, not the energy approaching the ear. And if you're wearing earphones, how do you prevent hearing loss when you don't know what you are delivering to your ear?
Reactive noise-cancelling earphones would seem to be a good idea, especially if they can reduce the ambient noise to 50 or 60db and alow music to be heard at less than 85db. In fact, without music, I would be relieved sometimes to have noise-cancelling headphones to simply provide some near-silence. It would be a worthy project for competent technicians to come up with an inexpensive (less than $20) noise-cancelling headphone with signal contrast (outside noise less than 50db to inside noise less than 85db), easy equalization, and galvanic skin response sensors to indicate when the music was causing discomfort. (GSR might not be sufficient. Many recent studies showed that the type of music listened to can produce a variety of emotional and chemical responses ranging from peaceful, healthy, joyful to irritated, angry and unhealthy. Here's a a different question: If you knew loud rap and metallic rock were as bad for your system over the long run as cigarettes, would you quit listening to it?) An article written in layman's terms with good references can be found here: http://www.headwize.com/articles/hearing_art.htm.
Although the general consensus is that much hearing loss is irrepairable, I have heard rumors of people recovering some hearing ability by listening to specific music. (I think I first saw this in a book called "Superlearning 2000", and have heard subjective reports since then, but I haven't noticed any scientific papers.) Also, if high-frequency loss is a problem to you, I've heard good things about Echophone.
"The mind works quicker than you think!"
I have mild hearing damage in my left ear, unrelated to headphones. In my case, it has to do with years of practicing the violin without an earplug in my left ear (which is most vulnerable to damage in violinists).
:)
Nevertheless, I think the iPod generation is in luck, because they are also one of the first generations where genetic therapy is not purely science fiction. In the past couple of years, researchers discovered that the production of a protein (Rb1) was responsible for the behaviour shared by the inner ear hair cells of all mammals, or more to the point... the reason the hair cells do not divide and hearing does not regenerate. Recently scientists discovered the gene that was responsible for producing this protein in mice. Given 5 to 10 years, I am optimistic the naive iPod generation, senior citizens and even I will be eligible for gene therapy to reverse the effects of hearing loss.
It is important to protect your hearing, but damage is inevitable no matter how careful you are. Luckily, for musicians and the ignorant iPod generation, there is a glimmer of hope on the horizon