61 posts • joined 15 Feb 2011
I have found I can greatly increase the sound quality by using the green pens to color my cables.
In the words of Steve Miller, "you can make your music on a ten cent comb"
Re: Train yourself
With popular music especially, the sound quality depends on what the engineer was mixing on, and presumably what kind of equipment he was mixing it for. Early Beatles albums, for example, sound great on good systems, but with early stones albums, the better the system the worse they sound. Either they were designed for crappy 60s car radios and cheap record players, or the engineers blew it.
Re: Emotional response
My advice when testing audio components for purchase (does anybody do that anymore?) was not to use some track you liked; you'd enjoy it if it was some drunken chimp playing it on a kazoo. But if a system could make you pay attention and admire something that you were kind blah about, that was a good system.
Re: The Holy Church of Sound.... again...
Can't say that it's true in the digital world (although it probably is) butnin the analog recording world there's no doubt that the distortions from the electronic components were orders of magnitude less than those from the mechanical components, I.e. the vinyl/cartridge system and the speakers; and of those two, the greatest single source of alteration in the signal was the interaction between the speakers and the listening environment.
Re: FLAC, Sonus, Beats Audio and Apple...
Very true; the dream of copy protection with no vulnerable points lives on. (I get my music from Amazon too, but mostly free tracks)
You don't need a large scale test; if one person can reliably and repeatably tell the difference in a double blind test, then the difference is there; and there is no reason to think that a person with no real hearing deficits cannot learn to hear it with experience.
Re: One thing which hasn't been mentioned re MP3 encoding
If you can actually mp3s to decode, you have a way to detect problems which it's much easier than listening intently. Set up (or find a high schooler who can still do hardware) a good opamp with the original signal going in the plus and the signal run through the coder and decoderb into the minus, then adjust the levels to get the best cancellation, I.e. the output volume of the signal should be nearly zero. (Feed the opamp output into your listening system, I forgot to say) obviously, anything still audible will be distortion, caused by the digital process.
The last time I tried this with an outboard PCM encoder and decoder system I was really badly surprised at how much grunge was audible, and more importantly how really irritating it was. Admittedly, however, that was 30 years ago. I'm sure that since then, manufacturers have learned to make things worse.
Lest you think I'm an old crank, let me introduce to to the Aphex Exciter; a recording too used to deliberately add irritating distortion to the music, to make it really pop out at you. (Yes that's where Aphex twin got the name) When solid state took over from tubes, everybody raved about the brilliant highs, until they were proved to be distortion. Exact same thing when CDs took over from vinyl. Just add some popping and fizzing whenever your recording hits a high frequency, and it sounds awesome. But you get fatigued quite quickly.
Re: One thing which hasn't been mentioned re MP3 encoding
That's a good point; although the theoretical digital processing may be undetectable to human ears, one very seldom finds cheap chips which perform to theoretical perfection. Thus the use of 24 bit DACs in good CD players, to decode 16 bit encodings; because the bottom few bits on cheap DACs are worthless, so if you want real 16 bit accuracy in real life, you need to spec a 24 bit chip.
never notice the difference
Just like the visual detail lost in the lossy compression of jpegs is undetectable.
Re: Questions for rocket scientists:
All these approximations are orbit to orbit.
that's the easy part.
Re: Just a quick double check, it's not April 1st...
Was suggested maybe 50 years ago that a tank of water heated by a ground based tight laser beam makes a good interplanetary engine.
Re: Obvious nonsense
The original research papers themselves don't make such extravagant claims. Their purpose is not to sell advertising space, as is the purpose of newspapers, tv, and the web. That is why all those are devoted to dividing every thing in the universe into things that kill you, and things that save your life. With many things apparently on both lists.
"I don't want to die and I really don't want to die of cancer! Isn't there something I can do? Some medicine I can take? Anything? I'm desperate! "
"No need to go to such lengths, just eat fruits and vegetables"
"Ummm, err, anything. . Is there anything? "
"Seriously, anything? "
Re: BRAWNDO!! IT'S GOT ELECTROLYTES!
Despite the fundamentalists' (again false) belief that they represent traditional religion, it is only the religion of the Dark Ages in Europe which they represent.
More often, traditionally, science and religion did not clash; to the scientists of the Enlightenment, Newton for example, scientific study and discoveries were another form of worship; unfortunately, I can't remember which one it was who said that nature provided another Testament, the language of which was mathematics.
And even before that, while Europe was in the Dark Ages, the Islamic world unequivocally tied science to the glory of God, and the foremost Jewish thinker of the post-Talmudic era, Maimonides, around 1100 used as a starting point the assumption that to use scripture to try to refute either the teachings of science, or common sense, was a grievous error.
The fundamentalists of today, no matter what particular religion they espouse, all share intellectual laziness or incompetence, the very opposite of what the great figures in religion historically represented.
Re: Breaking News!!
"Wasn't it recently established that you get better government by randomly picking names from a phone book than from ANY of the diluted flavours of democracy currently practiced?"
Yes, I think you could make the argument that running for office should be enough to label a person as unfit for office.
Re: Breaking News!!
"Compared to a country that chooses it's leaders from the same heriditory class that went to a couple of boys-only schools and then studied politics at one university. Where not a single minister has any technical background and who fire science advisors if they fail to agree with the Daily Mail."
And we still end up with smarter, better, more liked and more competent leaders than yours."
It's the money. There are huge profits to be made by manipulating the media in America.
Re: Breaking News!!
"It's not that Americans are any more stupid than any other race - it's that they are poorly informed."
"No, they really are stupid and not just stupid, but proud of it!"
I submit that they are extremely well informed, however the information they are being informed with is manufactured to sell a political opinion, as thoroughly and efficiently as the majority of the information they are informed with regarding any particular fast food outlet, for example, is manufactured to sell them burgers.
Re: Breaking News!!
" CO2 levels rise - the Earth warms."
* No, it is Earth warms -> CO2 rises."
Sure, if you ignore the known IR absorption of CO2, and the big dent in the earth's radiated EM energy, right where CO2 absorbs
and conservation of energy, and the earth's temperature being 33 degrees C warmer than it should be purely from the sun's radiation at this distance (take the moon for example), then sure, the earth wouldn't warm proportional to the log of the CO2 concentration. On the other hand, if you accept all these, and as the earth warms, CO2 rises (which seems to be true), then we are kind of entering a bad period. Much as the Australian colonists experienced, without having to debate whether the number of baby rabbits rose after the number of adults, or was it that the number of adult rabbits rose after the number of babies?
" Computer models used by warmers produce high correlation between the temperature and CO2. The CO2 concentration has been rising very fast in the last 15 years, while the temperature is almost flat."
Just like it was almost flat from Jan '70 to Nov '77, Nov '77 to Nov '86, Sep '87 to Nov '96, Mar '97 to Oct '02, and Oct '02 to Dec '11 yet, that didn't seem to signal the end of the 42-year warming trend nearly linear from Jan '70 to Dec '11 (which you need, to explain your "Earth warms -> CO2 rises" and " CO2 concentration has been rising very fast in the last 15 years"). Denialists are like an ant climbing a staircase, who repeats "Whew, glad the climbing part is over" every time he gets to the flat part of a tread.
"The models do not model clouds and therefore the feedback mechanisms"
Well, yes they do, they always have. However, the IPCC has always stated that cloud feedbacks were the most uncertain of the modeled effects. Spencer et al used to rely on the hope that these effects would be negative. But that argument was valid 10 or even 5 years ago, not today.
"They are almost always wrong on the warmer side
So, you and Roy Spencer, as shown by his graph you linked to, admit that it IS warming, about 2-3 degrees C per decade, but not 6 degrees per decade? Well, that's a start. However, it's clear from the graph that he has displaced the "actual" temperatures to make them appear lower, by picking an alignment point to just this effect, i.e. a peak in the actual temps to a valley in the model, rather than aligning them to maximize closeness, as would be the logical and/or honest basis.
" Climategate emails showed how any dissent is supressed"
Not according to every investigation. You don't seem to have had problems finding such dissent. Or did you get Spencer's web page via some underground telegraph?
Re: IMG Breaking News!!
"There is no doubt that the more religious an American is the more likely he is to be a climate change denier.
There are literaly dozens of surveys which prove this."
Kind of funny; the idea that an all-knowing, all-powerful Creator screwed up on making the climate, but luckily by burning all the fossil fuel we can, a byproduct is that we will improve the climate.
Re: Breaking News!!
it's all a hoax! just like forest fires! there were forest fires long before there were humans, so obviously the argument that humans cause forest fires is nonsense! Just a hoax by Smokey the Bear, to keep up his lucrative government grants.
Re: Breaking News!!
("Mostly because of Man Made trapped gasses...")
Yeah, that's not exactly what they, or the theory, says.
Lend Lease, please
We only got to see like two seasons of it in the US. That is so frustrating.
nice of them, and probably very handy for wikipedia vandals, but generating large quantities of text on a virtual keyboard (or a real keyboard on a mobile, for that matter) is only slightly less odious than filming a major Hollywood movie on one.
"I'm sure I've read something about this kind of things before.."
The Great Baker House Snow Hack?
Something tells me this story has about as much reality behind it. Or maybe somebody could explain how taking hot dry air, running it through water so that it become cool (relatively) wet air, then mixing it with more hot dry air will result in condensation? Getting perilously close to perpetual motion there.
I suppose somebody will end up tying this to ":and therefore we see that climate change may not be manmade":
Re: That line.
I use that all the time for computer questions:
"The data warehouse shows all the customers with the same phone number"
"Hmm.... have you tried turning your computer off and turning it on again?'
Re: scientific ideas that lead from accepting it
Yes, Urban Heat Influence would certainly explain why the temperature is rising most rapidly in the Arctic and Antarctic, Siberia, etc. All those giant metropolises there.
"The truth is that we probably will not know for sure before climate historians debate the issue a thousand years from now. By then, they will have a thousand years of data (I'm assuming that the data will not have been fudged by "interested parties" and will be pristine, recorded data only - I may be wrong) and a wee bit of hindsight with which to refine their models."
Fascinating; you manage to argue that the evidence can only be judged long after the fact, and to pre-deny the results of that evidence should it not go the way you want, all at the same time. A denialist tour-de-force.
Well, that's certainly a new theory. You bucking for a job with a rightwing think tank? You're on the right path, they don't require any sort of aptitude for science, or logic in general.
Re: A quick correction
Even on a 5-year-average plot, which is abysmally noisy, you can see the JMA current estimate is above that from 1990 (I should probably point out that that is your "22 years", given the math skills discernible from the context), and that the slope is positive, both by linear fit and by eye. http://ds.data.jma.go.jp/tcc/tcc/products/gwp/temp/ann_wld.html
If you bother to go even further, and read the site in addition to bothering to look at the graphed data, you see that the JMA DOES NOT COVER THE POLES, which are warming faster than the rest of the Earth. http://ds.data.jma.go.jp/tcc/tcc/products/gwp/temp/explanation.html
The text on that page further describes their procedure for generating an overall global estimate from a time sequence of gridded point data, or as your quaint phrase puts it, "fiddling the figures"; so you can see that "Not fiddling the figures" doesn't enter into it. It's not in Japanese, it's in English, if you can read that language.
The JMA kindly sprinkles other clues around their website, should you wish to avail yourself of them. For instance,
"The seasonal mean temperature for the summer from June to August 2010 over Japan was the highest among the historical records held by the Japan Meteorological Agency (JMA) stretching back 113 years to 1898. ... The annual anomaly of the global average surface temperature in 2010 (i.e., the average of
the near-surface air temperature over land and the SST) was 0.34°C above normal (i.e., the
1971 – 2000 average), second only to that of 1998 since 1891."
Why do you guys always parrot what you read by people who make a living out of telling you things you wish to believe, and never bother to go look at the primary source? You always, ALWAYS end up looking like idiots and suckers.
Except for the part where the temperature has been rising. Even despite so much CO2 dissolving into the ocean that the pH is changing.
"Sapart feels the results mean climate scientists need to rethink what is a "normal" state for Earth's climate."
Uh, that would be hot, humid, and full of CO2, just as it was for the great majority of Earth's history, for billions of years before the current short time since photosynthesis sidetracked a lot of that CO2 out of the atmosphere and it got buried underground, resulting in an anomalous cool, dry, and less stormy epoch.
Of course, this deviation from the "normal" state is only metastable, and the potential energy stored in that fossil carbon means that it will eventually be returned to the atmospheric CO2 pool again and the climate will return to its normal hot, humid, and stormy state, like it was before there was any life on land. Wonder how/when that will happen?
Re: Coolness check-list
uhoh... Lucas electrics....
Mr. Son of Reagan:
You are apparently unfamiliar with the relatively recent ruling which establishes that corporations are persons in the eyes of the law and therefore are permitted to spend their money supporting whichever candidates they feel would be best for themselves, the country, and/or the world.
"Possessing a conservative bumper sticker is a good way to get your car keyed."
Possessing an Obama bumper sticker in some parts of the US is a good way to get your ass kicked. Your point is? Oh, right, liberals are not as wonderful as conservatives. Got it.
Re: 3 simple points
That graph seems to be evidence FOR sudden rapid warming in the past century or so.
Re: Solar Activity @ ac @ Posted Tuesday 10th July 2012 13:38 GMT
So you're going to stick to that story, eh?
"The estimated direct radiative forcing due to changes in the solar output since 1750 is +0.12 [+0.06 to +0.3] W m–2, " - IPCC Fourth Assessment Report: Climate Change 2007, Climate Change 2007: Working Group I: The Physical Science Basis, TS.2.4 Radiative Forcing Due to Solar Activity and Volcanic Eruptions
Re: Culture and Temperature
That sure explains why the Congolese Empire conquered Belgium.
Well, gee, nothing spells doom to a theory that hypothesizes that global average temperature has entered a new phase over the past century or less and has abruptly begun rising half a degree per decade or so, than a graph of "summer temperatures" which claims "the climate was often hotter than today", with no units on the temperature scale, on which the aforementioned last 100 years covers less than 7 mm and shows a distinct upwards streak, and on which the peak temperature a few years ago is seen to be higher than anything on the graph all the way back to a couple hundred BC, medieval warm period included.
I'll look up the original study later, but if this graph is the best argument you can provide, the you apparently don't understand the issues under discussion, no matter what the study says.
Re: Why on earth
Yeah, it's pretty obvious that converting to a hybrid is more advantageous for a large heavy vehicle which gets low city economy than a small light one which already gets good economy; and at the same time, less of a disadvantage for a large heavy vehicle which already weighs a lot than a small light vehicle which would be affected by the extra weight (and size of the hybrid stuff). Yet, the market for tiny hybrids continues to outstrip the market for big hybrid trucks and SUVs. Until you get to locomotives, of course.
Re: Why on earth
maybe Toyota can make them cheaper.
Re: "If you are driving too fast in the rain towards a brick wall and you MIGHT hit the brick wall"
what part of "not screwing with the climate randomly as a byproduct of the need to oxidize as much fossil fuel as possible as quickly as possible" reminds you of "swerving into another lane"?
Re: During the meanwhile ...
Well, don't stop there; tell us what "facts" would be relevant to the existence of tipping points in the global warming process? Other than "oops, we should have done something earlier, we're screwed now". which of course will be denied by all the usual suspects even after the fact, but I won't prejudge you on that.
My point, Ken Hagan, is "learn to file properly". → #
Actually, there's two types of filing (or storing of objects, for that matter). One is the good old "a place for every thing and every thing in its place" system which results in pegboards with outlines of tools drawn on them, etc. the other is the good old "heap" where stuff is located by search when needed, with or without indexing depending on size/need. each system has pros and cons.
However, it still only indexes (or searches in) files that it thinks that you should look in.
indeed. the old trick of finding the origin of random error junk by searching the program files to find which one contained the mystery text is long gone, for instance.
Dangerous space junk? Or valuable building material for orbital habitats, systematically launched over several decades prior to when it will be needed?
cooler heads fail
"There is nothing truly chaotic in the weather, it's just fundamental physics in operation, it is simply that we are unable to calculate the impact of all the variables to allow us to make truly exact predictions"
Umm... that's the basic definition of chaotic processes...
" Small differences in initial conditions (such as those due to rounding errors in numerical computation) yield widely diverging outcomes for chaotic systems, rendering long-term prediction impossible in general. This happens even though these systems are deterministic, meaning that their future behavior is fully determined by their initial conditions, with no random elements involved. In other words, the deterministic nature of these systems does not make them predictable." http://en.wikipedia.org/wiki/Chaos_theory
it's a conspiracy i tell you
The vastly wealthy and all-powerful climatologist cartel, scheming to retain their vastly wealthy grants.
The self-proclaimed geniuses here telling us that it's too complex to predict, would probably resist any suggestion that July in the northern hemisphere tends to be more warm than January, on the average. It's too chaotic to predict that!
Occam's slashing your wrists
The denialists need first to agree among themselves whether it never was warming, it was warming but it stopped, or it's still warming; then they need not only to explain what's causing/caused/didn't cause the warming (hint: "It's cyclical" isn't an explanation, it's an observation); they also need to explain WHY EXACTLY BURNING CARBON DOESN'T CAUSE A RISE IN CARBON DIOXIDE, AND WHY A RISE IN CARBON DIOXIDE DOESN'T CAUSE THE ATMOSPHERE TO RETAIN MORE INFRARED ENERGY as very basic physical theory predicts, and as the fact that the surface of the earth is warmer than the surface of the moon, for example, tends to confirm. I'm really tired of having to explain to people who are world-class scientists in their own minds that "The earth is not warming, and the warming is because of the sun" is not a scientific hypothesis.
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