Don't believe everything you read... Don't believe everything you seen on tv... Don't believe everything you watch on the internet...
Yes, it's unfortunate some who are more gullible now have bricked products. BUT, there are companies who take these devices and disassemble as soon as possible, to disseminate the information for those who can make money repairing them. A few minutes of research or second thought would have prevented something like this.
Perhaps now some of them might spend some time researching something before just blindly believing it was true. And maybe using this to fine tune their BS filter. One can only hope.
From what I gather, intentionally shaping the probability density down to lower amplitudes in situations where there is less noise allows them to stay farther away from what's known as the third order intercept.
The third order intercept is the amount of power passed through a device such that it produces an equal amount of third order distortion as original signal. Why's this bad? The distortion products interfere with whatever carrier lies in that frequency in an OFDM scheme.
So if the the noise is low, they use the PCS scheme to keep overall power down, which should hopefully allow them to stack in more carriers in the same BW. Which increase the Hz/bit figure of merit to almost theoretical max.
That's if the research I'm looking at is the same..
I could be way off, but I believe it's a result of just a few things taken too far.
1. Everyone expects schools to make their kid a genius. It's fine if all kids aren't necessarily gifted, as long as yours isn't the kid that's not.
2. In an effort to prove just how much kids are being taught, metrics are administered (usually in the form of tests). Teachers, needing to eat and stay housed, begin to sway their curriculum to ensure they get good results on these "metrics".
Sounds like a power supply that's on the edge of stability. Everything looks hunky dory until you get a batch of parts in on one end of the tolerance. Or tolerance stackup pushes it into an unstable region.
Could also potential be piezoelectric, where excited capacitors actually deflect and act as transducers.
You're missing the point. The extra noise adds no useful information unless you apply statistics to improve the overall accuracy on a point by point basis. If the LSBs are dominated by noise, they are literally toggling in a random fashion. The rounding error, which in your example, might be 1 LSB, gets spread over the entire bandwidth of interest.
A SNR of 120dB, which is nearly unheard of except in audio test equipment itself, only requires 19.64bits to represent. It's a mathematical fact. Adding more bits behind that only makes marketing the product more fun.
The only thing that CAN happen, and used to happen, is getting stuck on a bit if the system level noise is well below the noise floor the converter is capable of resolving. This was possible back in the early days of audio, and is responsible for Dynamic Range being tested with a -60dBFS scale signal to force the converter to be excited through a number of bits.
You're pretty spot on. Just a few points to highlight.
1. Bipolar devices have the very lowest broadband voltage noise of widely used transistors, with field effect being a bit higher (but with significantly lower current noise).
2. Modern audio devices correct nonlinearities with excessive open loop gain and feedback. This gives them the knee point after which distortion vs frequency begins to rise (because the open loop gain begins to drop vs frequency). It works well but gives the "audiophiles" one more thing to point at, since most tube amps run multiple stages, each with a fixed amount of local gain.
3. The last is psychological, and it's something I had to force my self to come to grips with as someone who literally used to design extremely high performance audio test equipment: If someone thinks something sounds good to them, it sounds good to them. Just like taste or smell. Which is why the whole audiophile mythos exists.
5. 32bit systems are a joke. None of them have low enough noise. For high end systems the first 20 bits might be useful information , if you're lucky. After that the rest of thr bits are noise, and are, from a physics standpoint, hooked up to a gaussian random number generator.
Happy listening.
When I read the synopsis, I figured the lawsuit was filed AFTER the bonehead recruiter let slip to the potential candidate that there was an agreement in place. To which I'm sure the candidate thought, "wtf?". And thus the lawsuit was born.
Didn't this happen to Apple and Google some time back too?
So the dog can probably detect common chemicals used in soldering flux and/or solder paste, and probably the resins impregnated in PCB material? Whatever it is, I doubt it's unique to the devices they mentioned in the article, that just makes the story seem more intriguing.
So he's not a "porn" sniffing dog, he's a dog trained to find electronics, which may or may not having ANYTHING to do with pornography.
For the brief time I had access to confidential information, I was required to review the company training every year, and a DOD inspector would interview select candidates during their yearly inspection and grill them on handling practices as well as other things.
As an analogy, the company was small, and they specifically said that their computer systems were not capable of storing such info. That would be like I had started scanning documents into my computer. If I had I'd probably be in a federal "pound me in the ass" prison. You know, unless I was Secretary of State.
DSPs are special processors that generally have many dedicated multiplier cores, as well as other math functions implemented directly in hardware. This allows them to do things like fixed point math operations very fast, sometimes in as little as a single digit clock cycles neglecting pipeline delays. In some cases certain math intensive functions such as video encoding/decoding are implemented directly in hardware too for the same benefits.
The vehicles used are unlikely to meet the requirements for taxi use, and are often flat-out unsafe for drivers, passengers, or bystanders.
I don't know what Uber/Lyft rides you have experience with, but every one I've had, the car was nicer, cleaner, and more well kept up than ANY cab I've ever seen. In fact I've NEVER been in a cab that didn't at least have the check engine light on.
Uber cars must have current registration, and in order to maintain active registration here, you must pass emissions. And in order to pass emissions here, your car better not have a check engine light on. Sooooo, yeah.
This. When I have to time to spare, I don't feel like I can relax if everything is in disarray. So by cleaning and doing the things that would otherwise be in the back of my mind nagging me, I am actually increasing my total enjoyment, even though the short term maybe a net loss in enjoyment.
There is a lot of research being done on this subject right now. Yes, right now there is no standard, so anyone saying 5G can basically be researching or claiming a wide variety of things. But here are some of the awesome things that ARE being looked at:
Massive MIMO: Huge multi antenna arrays that can effectively aim and focus a signal with destructive and constructive interference using DSP techniques.
Real-time channel mapping: Using advanced techniques, they are beginning to work on real-time channel mapping that allows the selection of best wireless channel communication so fast it can almost be done per transmission. In many cases, they are doing this not only for frequency, but transmitter and receiver emission direction.
Spatial Multiplexing: This one uses similar principles, but can multiplex signals based partly on their position of origination. This, in the ideal case, can allow multiple transmissions to be received at once without corrupting each other.
Pre-distortion techniques: Applying pre-distortion to the signal of the transmitters in mobile devices, so their power supply overhead can be cut (which would usually screw up third order intercept point and affect signal quality on the other end). This increases power efficiency and obviously battery life in the end.
In addition to those (and I'm sure I'm leaving some out), they are exploring drastic increases in instantaneous bandwidth, which they are quantified by bits per second per Hz. With improved signal reception and transmission techniques, the QAM modulation scheme can transcode more bits into a single signal carrier.
So yeah, some of it's hype, but if you think they are just slapping a new name on the same old stuff, you will be left behind.
Wow. Talk about reaching. I'm no tesla fan boy, but saying you can trick a radar system with RF equipment is like saying you can talk down a building with dynamite. Of course you can! In fact there exists RF test sets specifically for simulating radar targets for easier system validation.
One of the big deals with Apple's ability to negotiate is just like WalMart. Even though you might be getting the shaft in the negotiation room, it still usually ends up being a big chunk of revenue for whoever received said shaft. And because of that, they have been able to bend a vast lot of entities to their will.
Regardless of your take on TV networks, it's interesting to see someone who wasn't swayed by Apple's cash hammer.
Of course he has to say something about piracy, being so heavily vested in the film industry. But all the things you guys and gals are mentioning (I hope) is exactly what he's talking about.
Just as you explain, who in their right mind would want to go to a movie theater instead of staying at home when it's $12 for the ticket. Plus super high prices for everything else, gross floors, inconsiderate people, etc. In fact, we SHOULD blame the theaters some, as it is quite obvious they are simply resting on the movie industry's policies of allowing them fist dibs at movies. Forcing those who desire to see the movie to endure their BS practices.
However, I have noticed an uptick in theaters who have done a 180 to this. Around here, we have quite a few theaters that are no more expensive than the crappy, run of the mill places, and they offer nice leather reclining seats, food and drink service including full bar, online ticket sales with seat reservations, etc. And they WILL boot you if you don't turn of your phone or keep your trap closed.
And when you don't feel like you are being bent over with no other choice but to abstain, it IS kind of fun. Hopefully it will catch on more.
I know the conclusion they want us to draw, but what about the CEOs given a huge chunk of change and expected to revive a sinking ship. As if a single person can somehow right ineptitude throughout a whole org.
I did/do the second one you mention. And it was to do something I'm super passionate about, but I cannot justify leaving a successful career to do. So I was lucky enough to find someone to take me in and work at it part time. I got paid essentially minimum wage to build race cars, which my second boss made a nice chunk of money from from, and I was happier than the proverbial pig in mud.
This became hard to manage, as being married and beginning to push well into 13/14 hour days multiple times a week and one day during the weekend just to pursue a passion wasn't her favorite thing in the world.
This is the scariest thing about the stockmarket. The worth of a company can be broken or made based on no information, bad information, or just plain speculation. Heck, they don't even give you free booze when you gamble with your money!
What in the world?! A congressional representative that acts the way the founding fathers intended them to? Did he have to conceal his master plot by bending to wealthy controlling interests and making irrational, sweeping legislation so the rest of them would let him join only to reveal himself to be an upstanding representative that reflects the interest of his constituents?!
Dang..
I have to agree completely. While it SEEMS like "common sense" (which gun control advocates seriously need to stop saying, btw) to bar someone on the no-fly list from buying a gun, the hard truth is that it is in fact stripping you of a constitutional right without due process. And that's bad, bad, bad.
If you don't believe that it should be a constitutional right, then that's your burden to bear to try to get it amended. But time and time again the supreme court has upheld that interpretation.
They tried to smooth it over by saying there would be an appeal process, and I get that. But that's guilty until proven innocent, and once again, and very scary proposition, tbh.
Banning cell phones so you don't have to try to look around people who insist on holding their phones over their heads. Or banning cell phones because you don't want an amateur video of your concert on youtube. Given my jaded view of the music industry, I'd bet on the latter.
However, I've always wondered what the people who insist on taking photos and videos of everything they see do with those. Are they the modern day equivalent of those who used to corner people with their slide projectors while they begrudgingly sat and pretended to care? Enjoy your life, quit pretending everybody else wants to experience every second of it too.
Slashdot Mirror
Don't believe everything you read... Don't believe everything you seen on tv... Don't believe everything you watch on the internet...
Yes, it's unfortunate some who are more gullible now have bricked products. BUT, there are companies who take these devices and disassemble as soon as possible, to disseminate the information for those who can make money repairing them. A few minutes of research or second thought would have prevented something like this.
Perhaps now some of them might spend some time researching something before just blindly believing it was true. And maybe using this to fine tune their BS filter. One can only hope.
No, the issue is the explanation is sparse.
From what I gather, intentionally shaping the probability density down to lower amplitudes in situations where there is less noise allows them to stay farther away from what's known as the third order intercept.
The third order intercept is the amount of power passed through a device such that it produces an equal amount of third order distortion as original signal. Why's this bad? The distortion products interfere with whatever carrier lies in that frequency in an OFDM scheme.
So if the the noise is low, they use the PCS scheme to keep overall power down, which should hopefully allow them to stack in more carriers in the same BW. Which increase the Hz/bit figure of merit to almost theoretical max.
That's if the research I'm looking at is the same..
I could be way off, but I believe it's a result of just a few things taken too far.
1. Everyone expects schools to make their kid a genius. It's fine if all kids aren't necessarily gifted, as long as yours isn't the kid that's not. 2. In an effort to prove just how much kids are being taught, metrics are administered (usually in the form of tests). Teachers, needing to eat and stay housed, begin to sway their curriculum to ensure they get good results on these "metrics".
BAM, U.S. school system.
Sounds like a power supply that's on the edge of stability. Everything looks hunky dory until you get a batch of parts in on one end of the tolerance. Or tolerance stackup pushes it into an unstable region.
Could also potential be piezoelectric, where excited capacitors actually deflect and act as transducers.
You're missing the point. The extra noise adds no useful information unless you apply statistics to improve the overall accuracy on a point by point basis. If the LSBs are dominated by noise, they are literally toggling in a random fashion. The rounding error, which in your example, might be 1 LSB, gets spread over the entire bandwidth of interest.
A SNR of 120dB, which is nearly unheard of except in audio test equipment itself, only requires 19.64bits to represent. It's a mathematical fact. Adding more bits behind that only makes marketing the product more fun.
The only thing that CAN happen, and used to happen, is getting stuck on a bit if the system level noise is well below the noise floor the converter is capable of resolving. This was possible back in the early days of audio, and is responsible for Dynamic Range being tested with a -60dBFS scale signal to force the converter to be excited through a number of bits.
You're pretty spot on. Just a few points to highlight. 1. Bipolar devices have the very lowest broadband voltage noise of widely used transistors, with field effect being a bit higher (but with significantly lower current noise). 2. Modern audio devices correct nonlinearities with excessive open loop gain and feedback. This gives them the knee point after which distortion vs frequency begins to rise (because the open loop gain begins to drop vs frequency). It works well but gives the "audiophiles" one more thing to point at, since most tube amps run multiple stages, each with a fixed amount of local gain. 3. The last is psychological, and it's something I had to force my self to come to grips with as someone who literally used to design extremely high performance audio test equipment: If someone thinks something sounds good to them, it sounds good to them. Just like taste or smell. Which is why the whole audiophile mythos exists. 5. 32bit systems are a joke. None of them have low enough noise. For high end systems the first 20 bits might be useful information , if you're lucky. After that the rest of thr bits are noise, and are, from a physics standpoint, hooked up to a gaussian random number generator. Happy listening.
When I read the synopsis, I figured the lawsuit was filed AFTER the bonehead recruiter let slip to the potential candidate that there was an agreement in place. To which I'm sure the candidate thought, "wtf?". And thus the lawsuit was born.
Didn't this happen to Apple and Google some time back too?
So the dog can probably detect common chemicals used in soldering flux and/or solder paste, and probably the resins impregnated in PCB material? Whatever it is, I doubt it's unique to the devices they mentioned in the article, that just makes the story seem more intriguing.
So he's not a "porn" sniffing dog, he's a dog trained to find electronics, which may or may not having ANYTHING to do with pornography.
For the brief time I had access to confidential information, I was required to review the company training every year, and a DOD inspector would interview select candidates during their yearly inspection and grill them on handling practices as well as other things.
As an analogy, the company was small, and they specifically said that their computer systems were not capable of storing such info. That would be like I had started scanning documents into my computer. If I had I'd probably be in a federal "pound me in the ass" prison. You know, unless I was Secretary of State.
DSPs are special processors that generally have many dedicated multiplier cores, as well as other math functions implemented directly in hardware. This allows them to do things like fixed point math operations very fast, sometimes in as little as a single digit clock cycles neglecting pipeline delays. In some cases certain math intensive functions such as video encoding/decoding are implemented directly in hardware too for the same benefits.
The vehicles used are unlikely to meet the requirements for taxi use, and are often flat-out unsafe for drivers, passengers, or bystanders.
I don't know what Uber/Lyft rides you have experience with, but every one I've had, the car was nicer, cleaner, and more well kept up than ANY cab I've ever seen. In fact I've NEVER been in a cab that didn't at least have the check engine light on. Uber cars must have current registration, and in order to maintain active registration here, you must pass emissions. And in order to pass emissions here, your car better not have a check engine light on. Sooooo, yeah.
This. When I have to time to spare, I don't feel like I can relax if everything is in disarray. So by cleaning and doing the things that would otherwise be in the back of my mind nagging me, I am actually increasing my total enjoyment, even though the short term maybe a net loss in enjoyment.
Political officials setting themselves up to regulate things they have zero background knowledge in? Sounds like business as usual to me.
There is a lot of research being done on this subject right now. Yes, right now there is no standard, so anyone saying 5G can basically be researching or claiming a wide variety of things. But here are some of the awesome things that ARE being looked at:
Massive MIMO: Huge multi antenna arrays that can effectively aim and focus a signal with destructive and constructive interference using DSP techniques.
Real-time channel mapping: Using advanced techniques, they are beginning to work on real-time channel mapping that allows the selection of best wireless channel communication so fast it can almost be done per transmission. In many cases, they are doing this not only for frequency, but transmitter and receiver emission direction.
Spatial Multiplexing: This one uses similar principles, but can multiplex signals based partly on their position of origination. This, in the ideal case, can allow multiple transmissions to be received at once without corrupting each other.
Pre-distortion techniques: Applying pre-distortion to the signal of the transmitters in mobile devices, so their power supply overhead can be cut (which would usually screw up third order intercept point and affect signal quality on the other end). This increases power efficiency and obviously battery life in the end.
In addition to those (and I'm sure I'm leaving some out), they are exploring drastic increases in instantaneous bandwidth, which they are quantified by bits per second per Hz. With improved signal reception and transmission techniques, the QAM modulation scheme can transcode more bits into a single signal carrier.
So yeah, some of it's hype, but if you think they are just slapping a new name on the same old stuff, you will be left behind.
http://i.imgur.com/mXyupD1.gif
Wow. Talk about reaching. I'm no tesla fan boy, but saying you can trick a radar system with RF equipment is like saying you can talk down a building with dynamite. Of course you can! In fact there exists RF test sets specifically for simulating radar targets for easier system validation.
One of the big deals with Apple's ability to negotiate is just like WalMart. Even though you might be getting the shaft in the negotiation room, it still usually ends up being a big chunk of revenue for whoever received said shaft. And because of that, they have been able to bend a vast lot of entities to their will.
Regardless of your take on TV networks, it's interesting to see someone who wasn't swayed by Apple's cash hammer.
Of course he has to say something about piracy, being so heavily vested in the film industry. But all the things you guys and gals are mentioning (I hope) is exactly what he's talking about. Just as you explain, who in their right mind would want to go to a movie theater instead of staying at home when it's $12 for the ticket. Plus super high prices for everything else, gross floors, inconsiderate people, etc. In fact, we SHOULD blame the theaters some, as it is quite obvious they are simply resting on the movie industry's policies of allowing them fist dibs at movies. Forcing those who desire to see the movie to endure their BS practices. However, I have noticed an uptick in theaters who have done a 180 to this. Around here, we have quite a few theaters that are no more expensive than the crappy, run of the mill places, and they offer nice leather reclining seats, food and drink service including full bar, online ticket sales with seat reservations, etc. And they WILL boot you if you don't turn of your phone or keep your trap closed. And when you don't feel like you are being bent over with no other choice but to abstain, it IS kind of fun. Hopefully it will catch on more.
I know the conclusion they want us to draw, but what about the CEOs given a huge chunk of change and expected to revive a sinking ship. As if a single person can somehow right ineptitude throughout a whole org.
I did/do the second one you mention. And it was to do something I'm super passionate about, but I cannot justify leaving a successful career to do. So I was lucky enough to find someone to take me in and work at it part time. I got paid essentially minimum wage to build race cars, which my second boss made a nice chunk of money from from, and I was happier than the proverbial pig in mud. This became hard to manage, as being married and beginning to push well into 13/14 hour days multiple times a week and one day during the weekend just to pursue a passion wasn't her favorite thing in the world.
This is the scariest thing about the stockmarket. The worth of a company can be broken or made based on no information, bad information, or just plain speculation. Heck, they don't even give you free booze when you gamble with your money!
Nothing to see here, just a CEO stuffing her parachute a little more before jumping out of the plane and letting it go down in flames.
What in the world?! A congressional representative that acts the way the founding fathers intended them to? Did he have to conceal his master plot by bending to wealthy controlling interests and making irrational, sweeping legislation so the rest of them would let him join only to reveal himself to be an upstanding representative that reflects the interest of his constituents?! Dang..
I have to agree completely. While it SEEMS like "common sense" (which gun control advocates seriously need to stop saying, btw) to bar someone on the no-fly list from buying a gun, the hard truth is that it is in fact stripping you of a constitutional right without due process. And that's bad, bad, bad. If you don't believe that it should be a constitutional right, then that's your burden to bear to try to get it amended. But time and time again the supreme court has upheld that interpretation. They tried to smooth it over by saying there would be an appeal process, and I get that. But that's guilty until proven innocent, and once again, and very scary proposition, tbh.
Banning cell phones so you don't have to try to look around people who insist on holding their phones over their heads. Or banning cell phones because you don't want an amateur video of your concert on youtube. Given my jaded view of the music industry, I'd bet on the latter. However, I've always wondered what the people who insist on taking photos and videos of everything they see do with those. Are they the modern day equivalent of those who used to corner people with their slide projectors while they begrudgingly sat and pretended to care? Enjoy your life, quit pretending everybody else wants to experience every second of it too.