That is ridiculous to the nth degree. There is no mathematical basis for what you say. When you sample, all below nyquist is reproduced 100%. Peaks and valleys do not need to line up. To the extent that an analog source has frequencies above nyquist they will simply alias, and one can easily predict whether they will be audible. Your "phase" concept has no signal processing basis.
Regarding bit depth: Bit depth provides dynamic range. 16 bit means you can hear your home theatre hiss during quiet passages when it is really cranked. With 20 bit you can't. With 18 bit you probably won't. But 16 bit is NOT ENOUGH.
Regarding sample rate: Reproduction at a higher sample rate means simpler filters in the DAC. That has some importance in spite of what the article incorrectly states about ease of digital filter design.
Any non linear code will create distortion products, both harmonic and intermodulation. Don't know what sigma delta has to do with it. Conversion to non linear codes would be a totally separate process from filtering/decimation of sigma-delta sequences.
Image a loud and soft tone of widely different frequencies. With linear coding you can separate the two tones by a filter. With non linear coding the loud tone will interfere with the coding of the soft tone such that after filtering intermodulation products will exist. (imaging the loud tone going on/off and its effect on soft tone quantization)
Only linear codes can re-create complex waveforms without intermodulation and harmonic distortion.
The closest you can come is "long term" volume compression/expansion such as that used by dolby. In that case you can limit the dynamic range before coding and try to expand it back afterwards, but the data samples must be linear coding. Even this has side effects though.
Article is full of crap that is just plain wrong and misguided and the analogies suck. I'm not sayin 192KHz 24 bit is needed but the article is weird and says things that just are not true.
For example, saying that a stairstepped sine wave is mathematically the same is wrong --- stairsteps are impulses convolved with a square wave "impulse". This creates a roll-off at high frequencies. Basic signal processing. If you don't understand it, don't worry. Many don't. But the resulting sine wave will be the wrong amplitude. Sampling theory is based on infinitely fast impulses at each sample point, not stairsteps. A subtle point, but he misses many subtle points.
As for 192K 24Bit, there are reasons it is useful as opposed to 48Khz or especially 44.1KHz 16Bit: 1. Dynamic range. 20 bits gives 120dB +_ a few. But 16 bits (96dB) is not enough. 24 bits is way overkill, but doesn't hurt anything except storage space. Home theatre systems with 16 bits make audible noise when you turn them up. Put you ear next to the speaker when it is quiet and you will hear hiss. It may hurt your ears if they are there when when some sound comes through, but that depth is audible. His assertion that 16 bits is enough is not science, it's his opinion. (maybe even 18 bits is enough, but 18 is on the edge) 2. Simplicity of DAC - 192KHz means that dac filters can easily remove images. 96Khz is high enough to make the filter job simple, but 192Khz is simpler yet. His assertion that doing steep filters in digital is no issue means he doesn't really understand digital filters. Steeper slopes means higher lobes and more passband ripple. 3. All his talk about ultra sonics is laughable. Design a bad amp and it will sound bad. So what? Oh --- put in a bad signal so it will sound better? 4. My only point of full agreement is that you need good equipment first, 192/24 second. And I partially agree in that 192/24 is overkill.
If you are marketing yourself as an intelligent person, then posting comments about spelling, punctuation, and grammatical errors is not something that "looks good for your image"(??).
My personal feeling is that a mature intelligent person would send an email pointing out the error. Posting such in the article is rude, off-topic, whining which, in reality, is much worse for Slashdot than the original errors.
The errors are meaningless, harmless, will cause no loss of life, will cause no one to skip the article, and otherwise have no significant impact on anyone's life.
If they were really significant, you would stop coming to slashdot because of them. Instead, you post about them for attention. (or to humiliate them into becoming better? Is that what your parents did?)
Personally, I feel that grammar Nazi's have serious personality issues causing them to prove superiority by complaining about harmless slip-ups. Seriously folks, humans make errors. Pattern recognition characteristics of human beings can cause one to read right past serious spelling errors with noticing.
For example (I may be wrong, not being an English student), but the parent post has a missing comma.
Everybody makes mistakes. Lame, insecure grammer Nazi's point them out by posting in the article, making Slashdot less than what it could be.
If, in real life I called you a stupid lame-ass karma loosing jerk who can't think good, would you respond by pointing out my grammatical errors, or kick my ass? Get real, it's the information that counts.
Next time, see if you can just send an email to point out the errors and prove you aren't just doing it for attention.
you guys have serious issues. get with the program, dudes. this is the real world, not high school english class. i sure wish you grammar nazi's would go away. slashdot certainly would lose nothing, that's for sure.
Does it bother anyone but me that the words said when man stepped foot on the moon have been edited? He blew his lines, and it has been changed in all the tapes. I can't believe the Archives saved the changed version. I was hoping to hear the original in all its embarrassing glory.
Subject aside, when was the last time that a slashback didn't mention Firefly/Serenity?
Don't you know about the search feature? It's at the bottom of the page. Do we always have to do your work for you? You could probably Google it too. Why would you even want to know such a thing?
Wow, that's brilliant. AV is useless, but you think you need it? How did that ever get modded to +5 Insightful?
Getting past your idiotic/inconsistant statements, raincoats are useless if you stay indoors, condoms are useless if you don't have sex, and AV software is useless if you don't interact with the real world (and don't have kids).
really ---- can't handle big lists of bookmarks (can't arrange them --- and i submitted this bug years ago), can't ^n to clone a new window, have to search through tons of stupid extentions, can't import IE bookmarks with correct positions. And, it doesn't work on a lot of sites. Oh ---- and it takes fricken forever to start up.
If the researcher was worth his salt, he would know what mechanism was used to install the spyware and adjust settings to avoid it. Now, that information would be useful! Or at least publish the site so other could determine the real issues. What a STUPID article.
Could be 1 difference in vulnerabilities was the whole issue. Statistically meaningless.
The only thing firefox is good for is comics.com with adblock. Otherwise, forget it.
Rereading my post makes me think people might misunderstand. TFA is a MYTH, not the post I replied to. I agree with the posters sentiments. ---- TFA is an attempt to whitewash what occurred. TFA talks about what is not true rather than what IS true.
For example, how does it add to rememberence for me to say that it was a myth that NASA had antigravity suits that could have saved lives, but not enough for everyone, so they left them behind. Steers us away from the publicity overloaded, politicized, advertized, heavily promoted astronauts that tragically died from NASA incompetence.
Also, to imply there was no political pressure is to say that being pressured by non-engineer pointy-heads in NASA is not political pressure. BS, I say.
Yeah ---- why not write an article on the 20th aniversity to try to whitewash NASA incompetence. The whole flight was a propaganda game, and they lost their gamble. They had the odds in their favor, but lost they did.
The astronauts probably died horribly. The rest of the article is BS too.
BTW, I saw it live on the NASA channel. Just thinking about almost brings tears. To have that insensitive clod minimize reality like he did is truely offensive.
I see the spelling errors, parse the grammatical errors, and I don't look back. Anyone who feels it is neccessary to post a message regarding "to vs. too" has a mental problem. They want to pee on it and make it their own? Be superior? Who knows? But, I HATE it. It is one of my pet peeves. The same applies to dupes, grammatical errors, and other such BS. Having to listen to those totally unproductive whiners is Slashdot's biggest problem. If you are too stupid or too intolerant to deal with inconsequential errors in a mature way (ignore them, that is) then you fit into the category that/. could do without. You create most of the NOISE that has to be PARSED AND FILTERED.
Just like the movie ratings in the 60's
allowed R rated movies to become mainstream,
the V chip will allow even more radical
television to become common, since "you can block
it if you don't like it". Don't get me wrong, I
LIKE it. It's funny how trying to suppress
something just makes it more available. I think
the V chip is the best thing to come along in a long time.
ERROR 407: SIG NOT FUNNY!
but, they don't Effect climate...they Affect climate.
I propose a program to release the CO2 in the cliffs of Dover so we can get this place back to the warm humid green tropical paridise it was in the distant past.
Remember, Every time you exhale, you make a plant healthier.
Slashdot Mirror
That is ridiculous to the nth degree. There is no mathematical basis for what you say. When you sample, all below nyquist is reproduced 100%. Peaks and valleys do not need to line up. To the extent that an analog source has frequencies above nyquist they will simply alias, and one can easily predict whether they will be audible. Your "phase" concept has no signal processing basis.
Regarding bit depth:
Bit depth provides dynamic range. 16 bit means you can hear your home theatre hiss during quiet passages when it is really cranked. With 20 bit you can't. With 18 bit you probably won't. But 16 bit is NOT ENOUGH.
Regarding sample rate:
Reproduction at a higher sample rate means simpler filters in the DAC. That has some importance in spite of what the article incorrectly states about ease of digital filter design.
Any non linear code will create distortion products, both harmonic and intermodulation. Don't know what sigma delta has to do with it. Conversion to non linear codes would be a totally separate process from filtering/decimation of sigma-delta sequences.
Image a loud and soft tone of widely different frequencies. With linear coding you can separate the two tones by a filter. With non linear coding the loud tone will interfere with the coding of the soft tone such that after filtering intermodulation products will exist. (imaging the loud tone going on/off and its effect on soft tone quantization)
Only linear codes can re-create complex waveforms without intermodulation and harmonic distortion.
The closest you can come is "long term" volume compression/expansion such as that used by dolby. In that case you can limit the dynamic range before coding and try to expand it back afterwards, but the data samples must be linear coding. Even this has side effects though.
Article is full of crap that is just plain wrong and misguided and the analogies suck. I'm not sayin 192KHz 24 bit is needed but the article is weird and says things that just are not true.
For example, saying that a stairstepped sine wave is mathematically the same is wrong --- stairsteps are impulses convolved with a square wave "impulse". This creates a roll-off at high frequencies. Basic signal processing. If you don't understand it, don't worry. Many don't. But the resulting sine wave will be the wrong amplitude. Sampling theory is based on infinitely fast impulses at each sample point, not stairsteps. A subtle point, but he misses many subtle points.
As for 192K 24Bit, there are reasons it is useful as opposed to 48Khz or especially 44.1KHz 16Bit:
1. Dynamic range. 20 bits gives 120dB +_ a few. But 16 bits (96dB) is not enough. 24 bits is way overkill, but doesn't hurt anything except storage space. Home theatre systems with 16 bits make audible noise when you turn them up. Put you ear next to the speaker when it is quiet and you will hear hiss. It may hurt your ears if they are there when when some sound comes through, but that depth is audible. His assertion that 16 bits is enough is not science, it's his opinion. (maybe even 18 bits is enough, but 18 is on the edge)
2. Simplicity of DAC - 192KHz means that dac filters can easily remove images. 96Khz is high enough to make the filter job simple, but 192Khz is simpler yet. His assertion that doing steep filters in digital is no issue means he doesn't really understand digital filters. Steeper slopes means higher lobes and more passband ripple.
3. All his talk about ultra sonics is laughable. Design a bad amp and it will sound bad. So what? Oh --- put in a bad signal so it will sound better?
4. My only point of full agreement is that you need good equipment first, 192/24 second. And I partially agree in that 192/24 is overkill.
2004BX159
2004FU162
2005TM153
2006CD
2006SF681
The soonest is 4/01/07 for 2004FU162, but it is only 6 meters wide(9 kiloton impact)
All are pretty low probability, but possible
Check out this site to stay up to date:
http://www.hohmanntransfer.com/crt.htm
A pointless story with no data, no analysis, no facts, but lots of conclusions. Don't we usually leave those for Digg?
I said eom!
He blew it big time ---- not as described. I wonder why they are covering it up.
He blew it in the 1st AND second phrases.
Oh well ---- rewrite history, assholes
If you are marketing yourself as an intelligent person, then posting comments about spelling, punctuation, and grammatical errors is not something that "looks good for your image"(??).
My personal feeling is that a mature intelligent person would send an email pointing out the error. Posting such in the article is rude, off-topic, whining which, in reality, is much worse for Slashdot than the original errors.
The errors are meaningless, harmless, will cause no loss of life, will cause no one to skip the article, and otherwise have no significant impact on anyone's life.
If they were really significant, you would stop coming to slashdot because of them. Instead, you post about them for attention. (or to humiliate them into becoming better? Is that what your parents did?)
Personally, I feel that grammar Nazi's have serious personality issues causing them to prove superiority by complaining about harmless slip-ups. Seriously folks, humans make errors. Pattern recognition characteristics of human beings can cause one to read right past serious spelling errors with noticing.
For example (I may be wrong, not being an English student), but the parent post has a missing comma.
Everybody makes mistakes. Lame, insecure grammer Nazi's point them out by posting in the article, making Slashdot less than what it could be.
If, in real life I called you a stupid lame-ass karma loosing jerk who can't think good, would you respond by pointing out my grammatical errors, or kick my ass? Get real, it's the information that counts.
Next time, see if you can just send an email to point out the errors and prove you aren't just doing it for attention.
you guys have serious issues. get with the program, dudes. this is the real world, not high school english class. i sure wish you grammar nazi's would go away. slashdot certainly would lose nothing, that's for sure.
Does it bother anyone but me that the words said when man stepped foot on the moon have been edited? He blew his lines, and it has been changed in all the tapes. I can't believe the Archives saved the changed version. I was hoping to hear the original in all its embarrassing glory.
Wow, that's brilliant. AV is useless, but you think you need it? How did that ever get modded to +5 Insightful?
Getting past your idiotic/inconsistant statements, raincoats are useless if you stay indoors, condoms are useless if you don't have sex, and AV software is useless if you don't interact with the real world (and don't have kids).
really ---- can't handle big lists of bookmarks (can't arrange them --- and i submitted this bug years ago), can't ^n to clone a new window, have to search through tons of stupid extentions, can't import IE bookmarks with correct positions. And, it doesn't work on a lot of sites. Oh ---- and it takes fricken forever to start up.
If the researcher was worth his salt, he would know what mechanism was used to install the spyware and adjust settings to avoid it. Now, that information would be useful! Or at least publish the site so other could determine the real issues. What a STUPID article.
Could be 1 difference in vulnerabilities was the whole issue. Statistically meaningless.
The only thing firefox is good for is comics.com with adblock. Otherwise, forget it.
http://bisqwit.iki.fi/nesvideos/WhyAndHow.html
I downloaded uTorrent so I could watch their metroid and super metroid runs ---- amazing!! Not real play, but fun to watch anyway.
I expect I'm the only one on the planet still playing Sherlock ---- made it past 5000 games just this week.
Rereading my post makes me think people might misunderstand. TFA is a MYTH, not the post I replied to. I agree with the posters sentiments. ---- TFA is an attempt to whitewash what occurred. TFA talks about what is not true rather than what IS true.
For example, how does it add to rememberence for me to say that it was a myth that NASA had antigravity suits that could have saved lives, but not enough for everyone, so they left them behind. Steers us away from the publicity overloaded, politicized, advertized, heavily promoted astronauts that tragically died from NASA incompetence.
Also, to imply there was no political pressure is to say that being pressured by non-engineer pointy-heads in NASA is not political pressure. BS, I say.
Yeah ---- why not write an article on the 20th aniversity to try to whitewash NASA incompetence. The whole flight was a propaganda game, and they lost their gamble. They had the odds in their favor, but lost they did.
The astronauts probably died horribly. The rest of the article is BS too.
BTW, I saw it live on the NASA channel. Just thinking about almost brings tears. To have that insensitive clod minimize reality like he did is truely offensive.
Could we use it to clean up nuclear waste?
I see the spelling errors, parse the grammatical errors, and I don't look back. Anyone who feels it is neccessary to post a message regarding "to vs. too" has a mental problem. They want to pee on it and make it their own? Be superior? Who knows? But, I HATE it. It is one of my pet peeves. The same applies to dupes, grammatical errors, and other such BS. Having to listen to those totally unproductive whiners is Slashdot's biggest problem. If you are too stupid or too intolerant to deal with inconsequential errors in a mature way (ignore them, that is) then you fit into the category that
Just like the movie ratings in the 60's allowed R rated movies to become mainstream, the V chip will allow even more radical television to become common, since "you can block it if you don't like it". Don't get me wrong, I LIKE it. It's funny how trying to suppress something just makes it more available. I think the V chip is the best thing to come along in a long time. ERROR 407: SIG NOT FUNNY!
but, they don't Effect climate...they Affect climate. I propose a program to release the CO2 in the cliffs of Dover so we can get this place back to the warm humid green tropical paridise it was in the distant past. Remember, Every time you exhale, you make a plant healthier.