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Is Hearing Loss a Valid Choice?

Posted January 23, 2011 7:01 AM

It's always been a mystery why the maximum speed limit in most countries is 75 mph, yet automakers build cars that can go 120 mph or better. The same concept applies to personal music devices that can crank out 130+ decibels when the limit for hearing damage is around 85. Now trends point to limiting sound pressure output of headphones to the 85 decibel levels. Don't people have the right to speed and destroy their hearing as they please? Does limiting sound output to protect hearing violate your idea of personal freedom or is it a common sense design feature that should have been implemented from the beginning?

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#1

Re: Is Hearing Loss a Valid Choice?

01/23/2011 8:25 AM

It's not the automakers' goal to have all of their cars go 120 mph, but they do want to build cars that have enough acceleration to pass a truck going 50 mph in a 70 mph zone. The motive power that provides that much acceleration will also give you a high top end speed.

Sure, the automakers could put governors on the engines that would permit strong acceleration at moderate speed but limit the top end speed -- but that's not really necessary, since legal speed limits are posted and most people are content to stay within 20 mph of the posted limits.

As to the headphone issue, my general feeling is that we're already over-regulated by the nanny state. I don't see the need to make a federal case out of someone's choice to damage their own hearing. Where does it end? Do you ban skateboards, dirt bikes, bungee jumping, ultralights, rock climbing...?

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#15
In reply to #1

Re: Is Hearing Loss a Valid Choice?

01/24/2011 12:37 PM

Usbport, if someone damages their hearing unecessarily, when they have a choice of higher or lower sound, then it costs the taxpayer to put it right, this is disgraceful and should be stopped, at least here in the UK where everyone working pays for the NHS!

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#16
In reply to #15

Re: Is Hearing Loss a Valid Choice?

01/24/2011 1:25 PM

Good point.

Since everyone pays into the NHS, let's just go the whole way.

We should ban:

All contact sports.

All motorcycles.

All bicycles.

Rock climbing.

Recreational boating.

Recreational flying.

Red meat.

Firearms, Fireworks, Matches, Lighters.

Alcohol.

Tobacco.

Swimming.

Texting.

Affairs.

Cell phones.

Personal cars & Trucks.

Forks & Knives.

Sugar.

Roller skates & skateboards.

Steps and multi-story buildings.

Running

Pet Dogs & Cats.

Ladders.

Household poisons.

Weightlifting.

Depression (leads to suicide)

Chopsticks.

There are many, many more things that we could add to the list, but we simply don't have the time.

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#19
In reply to #16

Re: Is Hearing Loss a Valid Choice?

01/24/2011 4:13 PM

Might there be an exemption on sugar for lactose in breast milk, as long as it is consumed by people of the appropriate age?

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#22
In reply to #19

Re: Is Hearing Loss a Valid Choice?

01/24/2011 5:19 PM

I can see this is getting complicated. ;-)

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#23
In reply to #22

Re: Is Hearing Loss a Valid Choice?

01/24/2011 5:20 PM

As it goes when governments start to interfere with things that are supposed to be for our own good.

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#28
In reply to #1

Re: Is Hearing Loss a Valid Choice?

02/13/2011 8:56 AM

<...most people are content to stay within 20 mph of the posted limits....>

Would they be the people that treat speed limits as speed targets?

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#29
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Re: Is Hearing Loss a Valid Choice?

02/13/2011 8:59 AM

Curious. What does speed target mean?

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#2

Re: Is Hearing Loss a Valid Choice?

01/23/2011 8:26 AM

This shows a lack of understanding of reality. That is why it is a mystery.

Even if the limit is 75, I don't want a car that can't go faster in an emergency or can't get me out of the way if something unexpected happens.

For audio, the idea of limiting SPL to 85 dB is also another example of misunderstanding and ignorance. Attend a symphony orchestra and you are subjected to over 100 dB of SPL, but those are dynamic peaks, not average or continuous power levels.

85 dB is a good number for continuous power, such as a siren or machinery. However, music is dynamic and has average SPL of lower energy.

The exception to this is some of the MP3 (and in some cases CD) recordings where compression is employed in the mixing process to reduce the dynamic range and create a louder listening experience. These recording can and will cause hearing damage when cranked up.

I really don't care to have some regulating body policing my home stereo and I have absolutely no sympathy for those that ignore their parents warnings and listen to music so loud in their cars that it causes my dishes to rattle inside my house.

Finally, common sense is not forcing people to comply to someone else's will. Common sense is exercising sound judgement of one's behavior.

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#3

Re: Is Hearing Loss a Valid Choice?

01/23/2011 11:07 AM

As a person whose hearing was damaged unintentionally by the high dB output of headphones while on the job recording an experimental sound performance, I think a design feature that limits the potential for harm is a good idea. Obviously, the limit should be high enough to permit a normal dynamic range for music.

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#4
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Re: Is Hearing Loss a Valid Choice?

01/23/2011 12:44 PM

And what is a normal dynamic range for music?

What is too loud?

Again, people assume that hearing damage is caused by a specific SPL or sound pressure level. That is, once you reach 86 dB damage occurs. This is not the case and has more to do with the magnitude of the impulse, the area under the curve, and the frequency than simply clipping at a specific SPL. There are other factors, too.

The ear works in a fashion that is far more complex than you might think, so a simple upper limit in SPL is not going to work.

I guess all of this also begs the question, should anyone be responsible for their own actions or is it always someone else's responsibility to look after your well being?

So, in your example, is turning the volume control down first not a prudent move?

To answer the original post's question, "Is Hearing Loss a Valid Choice?" No, it is not a valid choice, it is a stupid choice when self inflicted. However, there will always be an attorney that will tell you otherwise.

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#5
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Re: Is Hearing Loss a Valid Choice?

01/23/2011 1:24 PM

"So, in your example, is turning the volume control down first not a prudent move?"

It was a "one of a kind" situation if you must know: listeners in the audience also complained of pain in this performance (a sound-from-light experiment out of Marseilles). The damage to me was caused by a quirk of the gear (not mine) which I didn't understand at the time - using the light on the mixer caused a drain on the power and the levels dropped so I adjusted to compensate; then when the light was turned off the power and the level surged back.

Is this relevant to general usage of headphones and stereos? Probably not. You win, again.

You can call me stupid if you like, and maybe I am, I sure didn't sue anybody over it.

It sounds like you know enough about hearing damage and SPL to make a meaningful contribution to a discussion of the parameters that would be relevant to safety. I don't understand why you would flatly oppose the idea that safety should ever be a consideration in design. Feeling a little irritable this morning? Or do you reckon that 130 dB is about right for home stereo and headphones?

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#7
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Re: Is Hearing Loss a Valid Choice?

01/23/2011 1:50 PM

Obviously, there is a difference in a malfunction versus self induced harm. Having fault tolerant equipment is a good thing.

It just seems like there is a push these days to shed more and more of one's personal responsibility onto others because when it happens to them they do not want to bear the price.

That was not how I was raised and it is confusing and frustrating to see a prevailing attitude that we don't need to be accountable for our actions anymore.

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#9
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Re: Is Hearing Loss a Valid Choice?

01/23/2011 2:30 PM

I do agree with you in principle, that 'blaming the product' because of lack of common sense has reached ridiculous proportions - this is more so in the US than in Canada because of differences in the tort side of the legal system.

But I also see the sense of safety as a design consideration, in cases where the end user is likely to be ignorant of the potential harms. The headphone issue probably applies to children, since everyone seems to be fitted with earbuds as soon as they leave the womb these days...

Seriously, I would never jog or walk on a busy street with headphones - I grew up considering my hearing to be part of the experience, and also part of the essential safety net... I'm surprised that there hasn't been some kind of scandal similar to 'texting while driving' for the accidents due to not listening to your surroundings. But there you are, we don't seem to have a culture of common sense any more.

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#10
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Re: Is Hearing Loss a Valid Choice?

01/23/2011 4:57 PM

We have had one or two instances where people were struck by trains because they did not hear it.

The ultimate was when a deaf person died walking down the middle of the tracks. I just can't fathom why someone would do that knowing that there is no way to know what is coming behind you.

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#6

Re: Is Hearing Loss a Valid Choice?

01/23/2011 1:35 PM

I think it's more a public safety issue and law suits. We buy or kids MP3 player with head phones. We as parents or the manufacturer can not control the volume they play it at. So they do not damage their hearing the manufactures now limit the volume. Some of this maybe do to a increase in litigation faced by the manufactures of these devices. Even most adults do not understand the damage the do to their hearing when listing to loud music.

So if people want to blow there ear drums out because they can't control themselves. And they want to hold the manufacturer responsible. Then the the manufactures only recourse is to do it for them.

Next up the car stereo manufactures that build those mega watt amp systems. You know the ones where you see the rear fenders vibrating and bulging in and out. Can you imagine what that does to their hearing. Let alone the discord it causes in the public because they think we want to hear it too in the middle of the night.

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#8
In reply to #6

Re: Is Hearing Loss a Valid Choice?

01/23/2011 2:00 PM

When I was growing up I had the way to loud earphones which eventually graduated me to one of those car sound systems when I was in my late teens and up. I have also been around industrial and farm machinery all my life too with little to no hearing protection.

I am now 36 and still test at above average hearing in both range and sensitivity.

So where do we then stop with the other nanny state issues that may come up after this? Block out the sun just in case someones kid it too stupid to keep himself from staring at it? Issue everyone high UV rated sunglasses the day they are born and keep supplying them until the day they die?

The reason I am against this is because it just one more step in continuous outward spiral of regulation and unnecessary protection over things that where once all handled by what was then common sense.

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#25
In reply to #8

Re: Is Hearing Loss a Valid Choice?

01/25/2011 3:22 PM

Question is who pays for those with the lack of common sense?

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#26
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Re: Is Hearing Loss a Valid Choice?

01/25/2011 5:27 PM

Well, historically, who has always paid for the village idiot?

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#11

Re: Is Hearing Loss a Valid Choice?

01/23/2011 5:26 PM

What?? Wearing floss?

I say a person should be able to wear what they want.....

QUIT MUMBLING!

Consarn whippersnappers!

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#12

Re: Is Hearing Loss a Valid Choice?

01/23/2011 11:34 PM

YES, hearing loss is a valid choice, as the author said.

Utterly bottomless stupid, nut valid. So are other supidities.

NOW< WHAT?

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#13

Re: Is Hearing Loss a Valid Choice?

01/24/2011 7:42 AM

Of course people should have the right to destroy any part or ability of their own body if they consciously and deliberately choose to do so, provided only that this poses no risk to others. However, especially young people tend to explore the borders of all kinds of pleasant experiences, be they alcohol, drugs, sound, light, speed or whatever. But in case of hearing these envelope-stretching experiments do not give immediate feedback regarding the effects of the experiments. Usually these will be revealed only dozens of years later. So there is no such thing as a conscious and deliberate choice, let alone whether or not that choice would endanger others, e.g. in traffic.

I think in principle this justifies a strong general emphasis on noise reduction, as well as limitations on sound producing capabilities of consumer products.

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#14

Re: Is Hearing Loss a Valid Choice?

01/24/2011 10:58 AM

Once we take out the minor detail that we are talking about people, what remains is the design of a feedback loop. Some folks are wired such that some sounds are MUCH more pleasant than the immediate consequences: rock concerts, hockey games, cars with mufflers in name only. Some folks (ahem) can't ride a city bus without both ear plugs and those ear protectors that the guy on the tarmac with the orange sticks uses. I don't blow out my components with high gain for the same reason I don't often put my hand on a hot stove. When the pain / danger / risk / is sufficient, people change aw by their selves right quick. How does that go? If you can't be a good example, you can at lease serve as a horrible warning.

Gotta love it: Today's CR4 quotation at the bottom of the page is, "You cannot escape the responsibility of tomorrow by evading it today" -- Abraham Lincoln

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#17

Re: Is Hearing Loss a Valid Choice?

01/24/2011 3:32 PM

I have two young children. While I am a firm believer in personal responsibility, I do not allow them to use headphones (with the exception of overseas flights and a few other occasions where I or their mother can ensure the volume is not too high). They are still young and have difficulty grasping the long term affects of their actions, not so very different from dental hygiene (brushing/flossing everyday). I want them to at least make it through adolescence intact with good habits before they take over managing those aspects of their bodies.

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#21
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Re: Is Hearing Loss a Valid Choice?

01/24/2011 5:19 PM

I applaud you, sir!

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#24
In reply to #21

Re: Is Hearing Loss a Valid Choice?

01/24/2011 5:21 PM

Thanks!! It's not easy....those little rascals have a lot higher energy level than my wife and I.

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#18

Re: Is Hearing Loss a Valid Choice?

01/24/2011 3:57 PM

Perhaps if people insist on listening to high pressure sound, they could have their Eustachian canals connected to the alimentary canal at its terminus. This way the sound pressure could be equalized. In the case of headphone users, a simple shunt from the Eustachian tube, to the outer ear, would suffice.

A good Hollywood plastic surgeon should be able to do this.

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#20

Re: Is Hearing Loss a Valid Choice?

01/24/2011 4:17 PM

Our Constitution protects us from our goverment.

Legislation protects us from other people.

Mothers protect us from ourselves.

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#27

Re: Is Hearing Loss a Valid Choice?

02/03/2011 12:41 PM

The design feature should be an option compulsorily made available in each set. The choice is that of the informed user. Rangasayee Mumbai

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