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Unintended Aural Consequences of MP3 Compression
zenst writes "A rather interesting read about possible damage to your hearing due to the way most audio compression techneques work. They mainly work by presenting a signal that the brain perceives to be the same as the original and it is this assumption that could effect our hearing and the way we hear."
I thought my hearing was going from turing my speakers all the way up.
Mess Stuff Up
There are many reasons for hearing loss and tinnitus that have nothing to do with what you listen to or what volume you listen to it at and everything to do with, for instance, degenerative diseases of the inner ear. The article doesn't provide much to persuade me that MP3s are going to make people go deaf.
Honorary Member of Jackie Chan's Kung Fu Process Servers
I listen to punk and hardcore music, so I don't think it matters what kinda compression is on my music, my hearing is gonna be lost either way!
Question everything that you've accepted without thinking.
The author presents only speculation, no evidence or mechanism. In fact there is a barely concealed paranoid rant about the mass media and DRM. By now MP3s are in sufficiently wide use that real hearing problems should be noticeable, yet I am aware of no studies or other complaints showing this to be the case. At worst, this is probably a "cell phones / power lines cause cancer" type nonissue.
Toronto-area transit rider? Rate your ride.
The author of the article seems to lack any relevant qualifications, any proof of his ideas, or indeed basic proofreading abilities.
He does say that CDs are overpriced though, so it must be worth posting on Slashdot.
A pizza of radius z and thickness a has a volume of pi z z a
As a healthcare provider and someone that works at Mayo clinic, this article does not even merit the cursory speed read.
can you hear me now?
" I have however some computer games with MP3 music, but I don't excessively play them. Despite I listen to music only quietly, I have repeatedly tinitus (and thus I also suspect the data reduction in radio and TV broadcasts as a cause)"
This guy seemed intelligent all the way up to the point where he wrote that particular line. If it only took that little of exposure to lossy sound caused him to have tinitus, then why aren't people by the millions complaining of hearing problems? I'm quite surprised he'd attribute his hearing problems to his hypothesis. I think it is far more likely there are other causes of his problems.
I also don't think, from what I've read here, that we're in any real danger of suffering noticable hearing damage from MP3s. The the main reason is that we don't listen to just MP3s 24 hours a day. Not even close! We'll be surrounded by compressed sound for years to come, but it'll never replace the natural every day sounds we hear all the time. Right now, as I write this, I can hear things happening all around me that definitely are not digital. As long as that noise is there, I can't imagine that our brain would focus in on the compressed sound itself.
It's an interesting hypothesis, but it doesn't hold up against real world data.
The article used jpeg compression on the pictures, I'll never be able to see properly again!
A pizza of radius z and thickness a has a volume of pi z z a
You forgot to mention s*x!
However, I'm not sure yet which takes more damage during the act, my genitals or my ears...
Anyway, as I understand the article, only half of my hearing capabilities will be damaged if my girlfriend screams MP3 encoded, because my ears have been calibrated using analog screaming (the vintage stuff).
I think I can live with it either way...
giel.y contains 2 shift/reduce conflicts
Furthermore, television, movies, and computer monitors are based on persistence of vision-- the idea that the eye and brain can be fooled into perceiving motion if the pictures are switched fast enough (in the case of NTSC TV, 30 frames per second). This is a significant "compression" of the data, far larger than the amount of data being thrown out by psychoacoustic compression. NASA uses cameras that record 10,000 fps to examine explosions and things of that nature that occur far too fast for us to perceive.
Reality occurs at a rate that technology currently finds impossible to record in full. That doesn't mean it's damaging us.
Scroll to the bottom and you'll find that this is written by "CYBERYOGI Christian Oliver(=CO=) Windler, (teachmaster of LOGOLOGIE - the first cyberage-religion!)."
This looks like one of many crackpot "religions" based on a few scientific terms and some mystical psychobabble. These are people that believe microwave radiation or EMF from power lines slowly poisons your soul, the world is coming to an end becuase of evil american weather control machines, the aliens have visited us from dimension Z, the ancient Mayan calendar is the key to all knowledge, astrology is a real and important force in our lives, and so forth.
Mix varying amounts of scientific-sounding nonsense, mysticism with references to eastern religions, profound realizations about the nature of space and time, and maybe a few terms like "asymptotically" to really fill the minds of morons with awe and fear, and you have yourself a religion, or more appropriately, a cult.
Nix absolutably seriousness.
Now have a look at this page of his. He appears to think that looking at the colour pink can be dangerous too. How did this stuff manage to get posted? In the pink article he claims to be a "researcher of neuronomy(science about the improvement of the usage of brain and nervous system)". Neuronomy? That's gotta be bogus. Anyone?
Since he basically said that he feels bad hearing is a reasonable price to pay for toppling the recording industry. And that any problems could be averted by some simple hacks without increasing filesize.
autopr0n is like, down and stuff.
Wow, the editors of Slashdot accepted this bullshit but rejected 20 or so of my submissions? At least I wasn't full of shit.
This is just ridiculous bull crap. So is the brief mention of "subliminal messages". Normally, I would elaborate further and explain, but on this I think not. Anyone stupid enough to not immediately realize that this is bullshit is beyond reason anyways.
social sciences can never use experience to verify their statemen
From the author's web page:
Warning: Pink can be dangerous for health! about the stress generating, sick making and learn- hindering effect of long exposure to pink in the viewfield
I sure am glad someone is finally focusing on these severe health risks! Where are the Surgeon General's warnings about the risks inherent in MP3s and the color Pink? Why isn't CNN covering this?
I mean, it's obvious that pink must be bad for you -- just look at the grammar in the abstract. The author is obviously a severe sufferer of pinkitis, poor man.
Note to ACs: I usually delete AC replies without reading them. If you want to talk to me, log in.
I'm a researcher in the neuromechanomy field, and I have found similar results in my studies. While I am not an expect in neuronomy, my research indicates that people get irritated when you place large pink sunglasses on them. I have found that requiring them to wear pink shoes also leads to irritability. Therefore, I have concluded that the color pink should be banned from all public places, much like smoking is beginning to be.
As a side-note, my neuromechanomy studies have led me to a potentially disastrous discovery: gravity is the leading cause of death. Preliminary studies involving rodents support my theory -- many died within minutes of being placed in a centrifuge. Therefore, I propose that mankind be fitted with antigravity suits, so that life will not be hindered by the harmful effects of gravity. It's amazing how long the human race has survived with a daily, constant exposure of this magnitude.
...then before electronic sound systems were invented, everyone was deaf. Therefore Beethoven wasn't the only deaf composer, the history books just say he is to make him look good!
...then everybody only heard mono before stereo was invented.
...then there was no math before the Babbage machine. Thus, Pythagoras, Archimedes and Newton are frauds.
...then video game players couldn't hear human voices before the mid 1990s because games didn't have much speech before CD-ROM.
...there is no such thing as depth perception because TV is still 2D. Thus no one is qualified to drive a car, or at least the people who watch TV aren't. Nor are Slashdot readers, I'm afraid.
Calvin and Hobbes has evidence that the same thing happened to color vision:
Calvin: Dad, how come old photographs are always black and white? Didn't they have color film back then?
Dad: They sure did. In fact, those old photographs are in color. It's just the world was black and white then.
Calvin: Really?
Dad: Yap. The world didn't turn color until sometime in the 1930s, and it was pretty grainy color for a while there, too.
Calvin: That's really weird.
Dad: Well, truth is stranger than fiction.
Calvin: But then why are old paintings in color?! If the world was black and white, wouldn't artists have painted it that way?
Dad: Not necessarily, a lot of great artists were insane.
Calvin: But... but how could they have painted in color anyway? Wouldn't their paints have been shades of gray back then?
Dad: Of course, but they turned colors like everything else did in the '30s.
Calvin: So why didn't old black and white photos turn color too?
Dad: Because they were color pictures of black and white, remember?
[Calvin leaves, meets Hobbes]
Calvin: The world is a complicated place, Hobbes.
Hobbes: Whenever it seems that way, I like to nap in a tree and wait for dinner.
That's the masturbation making you go blind, not the jpegs themselves.
Yes, there's something strange about this article.. it starts off with some interesting stuff, and then some reasonable speculation, and then degrades into some pseudo-religious political rant about DRM and the music industry.
As I read this I couldn't help but thing about RGB displays. The visual world is populated by a wide spectrum of photons of different frequencies, but due to our anatomy, our sensitivity peaks at three wavelengths, approximately red, green and blue. The entire color TV and video industry exploits this fact and achieves huge amounts of compression by transmitting three signals at these peak wavelengths. While I recognize that there are some certain mechanical elements in hearing, it seems to me that if this guy's arguments are sound, then we would have observed similar effects from watching TV-- that the absence of unperceived wavelengths would cause damage. Of course we all recognize that TV's bad for your health, but I don't think it causes the kind of damage he's alluding to.
So long, and thanks for all the Phish
However, your willingness to dismess out of hand the, shall we call it, intuition, of someone who is clearly at least educated both in the anatomy of hearing and the signals-processing fundamentals, is just as baseless.
Please tell me this is sarcasm.
This guy did little more than quote a college biology book, and scan the pictures to create a web site. On first reading the article I thought to myself, "funny, it doesn't feel like April first."
Also, even if we give this guy the benefit of doubt for a moment, there is still nothing to worry about. When was the last time you listened to MP3's and/or video games in a completely soundless environment for an extended period of time? Last few times I did it, I was at home with the refidgerator humming away, a few computer fans whirring, my chair creaking occasionally, simply put, I had lots of background noise for my ears to filter out, without my speakers adding to it. Sure, I would love to put a sensory depravation tank around my computer when playing Thief, it can really blow yuor concentration when your roomate bursts out in laughter 3 feet away from you while reading his email. But, I don't have one, and so am bombarded with small, often inaudiable sounds.
If I were a betting man, I would confidently bet you were right. But just the same, I hope a few members of the medical community (I think this would take a background in neurolobiology/cog. sci/audiology) see this, and at least consider it. You could probably devise a relatively inexpensive animal study or two that could safely close off this kind of speculation.
There are far better things for that money to be spent researching. Don't waste it on junk like this.
Necessity is the mother of invention.
Laziness is the father.
By this logic jpegs damage your eyes.. You'll go BLIND... BLIND...BLIND I sez..
Maybe only because what your doing while veiwing those jpegs..
They wont be happy until I'm sitting in a darkened padded room eating a liquid only diet
Here in Canada we call that "going to the pub". It's not a bad way to live actually..
Trolling is a art,
the nerves in your ear and all the low-level neural processing of sound will fire in response to the gaps, watermarks or subliminal signals in the music stream. It is only the brain that filters these out. But is the brain unaware of the signals?
it's long been known that humans perceive sounds they dont actually hear in the sense that their brain registers it. Ancient church organs have sub sonic and ultra-sonic pipes in them for the purpose of stimulating emotional responses in the audience. It's well known from many pyschological studies that slight , consciously imperceptible, delays introduced into telephone conversation response times causes people to think the person they are talking to is angry.As a kid I could always hear the flyback transformers in TVs and video screen. I could not tell you what the sound sounded like--it was not a high pitch. it was no pitch at all. But I could tell it was present.
The thesis that spectral drop-outs could somehow disrupt neural feedback circuits is an interesting one. Certainly most human made electronic circuits dont handle delta-function responses well: that is the phase lag in any feasible feedback circuit puts an upper limit on the fidelity of the response. Thus the idea that the neural feedback that nulls the unwanted off-pitch sympathetic vibrations in the ear following a loud signal could be disrupted if the waveform was not continous after the loud noise is a valid one. Would this lead to false retraining of the neural net and thus tinitiitus? doubtful. But interesting as an example of an unintended consequence no one thought of before.
Some drink at the fountain of knowledge. Others just gargle.
Well, OK, I'll admit, it was an interesting read for me (an ex biologist / scientist). But for the masses, you can either RTFA, or the following summary:
MP3's and other lossy compression (loss of quality through compression) methods change the distribution of frequencies along the sound spectrum, and maybe, just maybe, because nobody has proven otherwise, it might be the case that this can possibly have permanent effects on one's hearing. Maybe. Possibly. We dont really know. Neither do you. Or so we might think. Maybe. Oh yeah - here are a bunch of pictures from a biology textbook that look really cool, but are only connected to our speculation in a weak tangential unscientific way. Maybe.
. I haven't heard so many maybe's and 'might be the case' equivalents since the last 'In Search Of' marathon. And the article didn't even have Spock. .
__ Someday, but not this morning, I'll finally learn to use the preview button.