What I got from it was that they average out to 64Kbit/s per channel. They said that the music channels would get more, the talk channels less. It could be that the max per channel was 64Kbit - even so, it sounded very good when I checked it out. I listened to the classical station (which usually provides the greatest dynamic range), and it sounded pretty doggone good.
If you add up all the bandwidths of their signals, they sure are using that 12.5 MHz slice efficiently! They must have some wicked filters!
that there's nothing for you on XM radio, try their samples. I had the opportunity to see it demo'ed just before their official rollout - it was really nifty. I was able to find technical specs on the fcc website, hidden among various license actions. Here's an excerpt:
XM Radio Inc. has filed an application for modification of its authorization to construct, launch and operate two Digital Audio Radio
Service (DARS) satellites. XM Radio seeks (1) to increase the maximum EIRP of each of its DARS satellites to 68.5 dBW, (2) to
revise its downlink channelization plan by increasing the number of channels from five to six, including four carrier frequencies (two
per satellite) of 1.84 MHz each and two frequencies for terrestrial repeaters of 2.53 MHz each, and (3) to increase the transmission
rate of each of its satellite carriers to 3.28 Mbit/s.
Our satellites will transmit audio programming within a 12.5 MHz range of S-Band radio frequencies that have been allocated by the FCC for our exclusive use. Megahertz is a unit of measurement of frequency. This 12.5 MHz bandwidth will be subdivided to carry the transmission of six signals, two signals to be transmitted from each of our two satellites and two signals to be transmitted by the terrestrial repeater network. The audio programming for XM Radio will be carried on two satellite signals, and the remaining two satellite signals and the terrestrial repeater signals will repeat the audio programming to enhance overall signal reception. The transmission of higher quality sound requires the use of more kilobits per second than the transmission of lesser quality sound. In order to provide high-quality digital sound, we expect that music channels will require approximately 56 to 64 kilobits per second, depending on the type of compression technology used, whereas talk channels will require significantly less bandwidth. We expect to use our allocated bandwidth in such a way as to provide up to 100 channels of programming, with our music channels having a high bandwidth allocation so as to provide high-quality digital sound.
We have signed a contract with ST Microelectronics to design and produce chips that will decode the XM Radio signal. We have completed the production chipset design and ST Microelectronics has commenced fabrication to make the components available to radio manufacturers starting the end of March 2001.
Technology will include the use of COFDM (Code Orthogonal Frequency Division Multiplex), which is a superior modulation technique for the delivery of high quality audio, video and data. This modulation technique allows a moving vehicle to receive quality service at highway speeds.
is not so bad. Everyone that uses Kazaa should submit a $5 paypal payment to them once a week or so. That should cover the fine with plenty left over to fund development!
ROTFL! I can see myself now, camo from head to toe, trustly doublegun poised and at the ready, stalking those wily frozen turkeys in the freezer aisle of my local grocery store...
Huh! I thought he was talking about Richmond, VA. We had the "Math/Science Center" that served the surrounding counties. The Talented and Gifted kids could take special Saturday courses there, and they had an HP-2000 that we dialed into at 110 then 300 baud. I remember out account to this day, L401, for Liberty Junior High.
Funny you should mention that - I've been getting nailed by port 53 hits for some time now. I was hoping it was something simple like a zone transfer, but I guess not. Thank goodness for my barricade! Should we exchange offending IP addresses?
For that matter, how often do you see turkeys (frozen or thawed) flying at 300 feet? Or 30 feet? I hunt the little buggers, and they can't fly worth a darn.
...not permitted for commercial use due to the interference it causes...
Huh? Antennas don't cause interference. You must use the proper antenna for the task at hand. There are plenty of commercial uses for omnidirectional antennas.
Comparing a $50,000 narrowbeam antenna to a tape measure quarter- or half-wave whip is illogical in the first place. Those $50,000 arrays are made to communicate from a spacecraft very far away to a tiny little speck of dirt called earth using as little power as possible due to the extreme distance from the sun. The tape measure variety are made to pick up signals from earth while in earth orbit - necessitating a wide receive and transmit pattern. Apples and oranges, and all that.
in addition to their virtualized x86 processor is one that supports many different architectures (Alpha, x86, PA-RISC, etc) on a single chip, with context switching between them. Add vmware to the mix, and you've got virtual OSs on top of virtual, native processors. Talk about being able to run platform 'A's native code on platform 'B'!
This is you Antarctic Ozone layer. We're levelling off at our cruising altitude of 198,000 ft and expect an on-time arrival in Omaha. Thanks for flying Ozone Air, and have a nice day.
Isn't giving up your ability to carry a silly little bag worth it knowing that you won't be blown up by a hidden bomb.
You just pointed out the major fallacy with almost all of the 'heightened security' measures put in place after 9/11. There is absolutely no way to 'know' (ie guarantee) that you'll not be blown up. Everyone assumes that security measures are perfect; they're not. Witness the Nepalese citizen arrested yesterday in O'Hare with knives, a stungun, and mace on him _after_ passing thru security. Most, if not all, of the restrictions put in place are nothing more than feel good measures meant to make the public _feel_ secure, regardless if they're really more secure or not.
I watched a VA National Guard soldier and a county cop chase down a guy at Richmond International Airport yesterday and demand to see his ID because he bypassed the escalators (which most people use) and headed for the elevator. This guy had _left_ the security area!
As has been quoted many times, those willing to give up a little liberty for the perception of safety deserve, and will have, neither. I would much rather allow anyone on a plane without being searched and have at least one undercover Air Marshal onboard every flight to deal with any problems that might arise (including the ones you can't screen for - air rage, drunkedness, etc) than search everyone and hope that the security measures on the ground were sufficient.
The quietest perceptible sound, if I remember correctly, corresponds to P0 = 1 x 10^-12W (1 picoWatt). That makes the equation for relative power dB = 10 * log(P / P0).
For those of you in other parts of the world, "Fig Newtons" are rather tasty fig-based (therefore quite high fiber) cookies. 640 of them would probably guarantee an afternoon in the white echo room.
For example, GNU GRUB can be installed on UNIX-like operating system (i.e. GNU/Linux)...
Isn't this against RMS's GNU/Everything treatise? He claims that the OS is Linux, but the distribution should be GNU/Linux. Here the OS itself is called GNU/Linux... Humm...
Any business that demands your SSN for service can get into trouble with the Federal Govt. for doing so.
Bzzzt. Not true. A private business can ask for your SSN, and you can refuse to give it, but they can also refuse service. See the SSN FAQ at networkusa.org, the CPSR SSN FAQ or the SSA FAQ
Advertising "POP3 access to your email" implies that POP3 compliance is all that's necessary to retrieve your email. Requiring SPA in addition to POP3 in order to retrieve email is at least deceptive, if not downright false. It would be like Microsoft saying, "NT is all you need for to run a server", forgetting to mention, "Oh, and you need these 1e6 CALs". Wait, they already do that...
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What I got from it was that they average out to 64Kbit/s per channel. They said that the music channels would get more, the talk channels less. It could be that the max per channel was 64Kbit - even so, it sounded very good when I checked it out. I listened to the classical station (which usually provides the greatest dynamic range), and it sounded pretty doggone good.
If you add up all the bandwidths of their signals, they sure are using that 12.5 MHz slice efficiently! They must have some wicked filters!
that there's nothing for you on XM radio, try their samples. I had the opportunity to see it demo'ed just before their official rollout - it was really nifty. I was able to find technical specs on the fcc website, hidden among various license actions. Here's an excerpt:
Here's a link to a picture of him and another copy of his bio at a ham radio site. His callsign is WB7NUV. His address of record is in Issaquah, WA. His website is www.schmidt.org.
is not so bad. Everyone that uses Kazaa should submit a $5 paypal payment to them once a week or so. That should cover the fine with plenty left over to fund development!
ROTFL! I can see myself now, camo from head to toe, trustly doublegun poised and at the ready, stalking those wily frozen turkeys in the freezer aisle of my local grocery store...
Huh! I thought he was talking about Richmond, VA. We had the "Math/Science Center" that served the surrounding counties. The Talented and Gifted kids could take special Saturday courses there, and they had an HP-2000 that we dialed into at 110 then 300 baud. I remember out account to this day, L401, for Liberty Junior High.
...mining space, come get the 'cosmic dirt' out of my living room!
Funny you should mention that - I've been getting nailed by port 53 hits for some time now. I was hoping it was something simple like a zone transfer, but I guess not. Thank goodness for my barricade! Should we exchange offending IP addresses?
For that matter, how often do you see turkeys (frozen or thawed) flying at 300 feet? Or 30 feet? I hunt the little buggers, and they can't fly worth a darn.
form of radiation, right? This happened in water in Japan, right? It must've been Godzilla! 8-)
Huh? Antennas don't cause interference. You must use the proper antenna for the task at hand. There are plenty of commercial uses for omnidirectional antennas.
Comparing a $50,000 narrowbeam antenna to a tape measure quarter- or half-wave whip is illogical in the first place. Those $50,000 arrays are made to communicate from a spacecraft very far away to a tiny little speck of dirt called earth using as little power as possible due to the extreme distance from the sun. The tape measure variety are made to pick up signals from earth while in earth orbit - necessitating a wide receive and transmit pattern. Apples and oranges, and all that.
in addition to their virtualized x86 processor is one that supports many different architectures (Alpha, x86, PA-RISC, etc) on a single chip, with context switching between them. Add vmware to the mix, and you've got virtual OSs on top of virtual, native processors. Talk about being able to run platform 'A's native code on platform 'B'!
This is you Antarctic Ozone layer. We're levelling off at our cruising altitude of 198,000 ft and expect an on-time arrival in Omaha. Thanks for flying Ozone Air, and have a nice day.
Isn't giving up your ability to carry a silly little bag worth it knowing that you won't be blown up by a hidden bomb.
You just pointed out the major fallacy with almost all of the 'heightened security' measures put in place after 9/11. There is absolutely no way to 'know' (ie guarantee) that you'll not be blown up. Everyone assumes that security measures are perfect; they're not. Witness the Nepalese citizen arrested yesterday in O'Hare with knives, a stungun, and mace on him _after_ passing thru security. Most, if not all, of the restrictions put in place are nothing more than feel good measures meant to make the public _feel_ secure, regardless if they're really more secure or not.
I watched a VA National Guard soldier and a county cop chase down a guy at Richmond International Airport yesterday and demand to see his ID because he bypassed the escalators (which most people use) and headed for the elevator. This guy had _left_ the security area!
As has been quoted many times, those willing to give up a little liberty for the perception of safety deserve, and will have, neither. I would much rather allow anyone on a plane without being searched and have at least one undercover Air Marshal onboard every flight to deal with any problems that might arise (including the ones you can't screen for - air rage, drunkedness, etc) than search everyone and hope that the security measures on the ground were sufficient.
A blessing in disguise? How about a PVR that looks for the absence of 'bugs' to skip recording commercials?
...As opposed to minerals or vegetables? Of course they're animals!
The quietest perceptible sound, if I remember correctly, corresponds to P0 = 1 x 10^-12W (1 picoWatt). That makes the equation for relative power dB = 10 * log(P / P0).
3dB represents a doubling of power.
a "langauge", but the needle broke off when I accidently plugged it into a gigabit switch.
For those of you in other parts of the world, "Fig Newtons" are rather tasty fig-based (therefore quite high fiber) cookies. 640 of them would probably guarantee an afternoon in the white echo room.
Geez, if I had 640 Newtons, I know where I'd be spending the afternoon...
For example, GNU GRUB can be installed on UNIX-like operating system (i.e. GNU/Linux)
Isn't this against RMS's GNU/Everything treatise? He claims that the OS is Linux, but the distribution should be GNU/Linux. Here the OS itself is called GNU/Linux... Humm...
Any business that demands your SSN for service can get into trouble with the Federal Govt. for doing so.
Bzzzt. Not true. A private business can ask for your SSN, and you can refuse to give it, but they can also refuse service. See the SSN FAQ at networkusa.org, the CPSR SSN FAQ or the SSA FAQ
You forgot the biggie - Carbon is good for life!
Advertising "POP3 access to your email" implies that POP3 compliance is all that's necessary to retrieve your email. Requiring SPA in addition to POP3 in order to retrieve email is at least deceptive, if not downright false. It would be like Microsoft saying, "NT is all you need for to run a server", forgetting to mention, "Oh, and you need these 1e6 CALs". Wait, they already do that...