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#1
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On Jul 1, 7:24 am, wrote in
http://groups.google.com/group/sci.e...0c8ed13?hl=en& : how would u like to change the cell phone industry? Analog cell phones should stop using FM and should start using AM at whatever practical radio frequencies available. Digital cell phones should stop using the compression they use and start using monaural WMA compression with a CBR of 20 kbps or less and a sample rate of at least 44.1 KHz. In addition, the following must also apply: 1. In its uncompressed form, the audio must have a bit-resolution of at least 16-bit 2. The sample-rate of the compressed and the uncompressed version of the audio must be the same. |
#2
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Radium hath wroth:
On Jul 1, 7:24 am, wrote in http://groups.google.com/group/sci.e...0c8ed13?hl=en& how would u like to change the cell phone industry? Analog cell phones should stop using FM and should start using AM at whatever practical radio frequencies available. Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06/analog-cellphone-service-to-end-after.html I won't be sending you a valentine card. You're not my type. Are you also working on whale oil products and sealing wax? Digital cell phones should stop using the compression they use and start using monaural WMA compression with a CBR of 20 kbps or less and a sample rate of at least 44.1 KHz. Oh, you want music over your cell phone? Of course that means fewer users per MHz. Very roughly, the current 8Kbits/sec encoding rate, compared to your 44Kbit/sec, will only handle about 1/5th the number of users. So, your cell phone bill goes up about 5 times. Of course you don't mind because you'll have hi-fi oozing out of your phone. You might want to research variable rate codecs, such as EVRC. 1. In its uncompressed form, the audio must have a bit-resolution of at least 16-bit The encoding resolution is not changed by compression. If you encode something with 16 bit resolution, and compress it, you still have 16 bit data coming out. It's the data rate or thruput that changes with compression. 2. The sample-rate of the compressed and the uncompressed version of the audio must be the same. Not possible. If the rate in and rate out are identical, then there's no compression happening. At least you're consistent. You got everything wrong, again. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#3
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Jeff,
He typed the message on his Commodore 64 with an Atari floppy drive! Jeff Liebermann wrote: Radium hath wroth: On Jul 1, 7:24 am, wrote in http://groups.google.com/group/sci.e...696d6abf90c8ed 13?hl=en& how would u like to change the cell phone industry? Analog cell phones should stop using FM and should start using AM at whatever practical radio frequencies available. Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06...ice-to-end-aft er.html I won't be sending you a valentine card. You're not my type. Are you also working on whale oil products and sealing wax? Digital cell phones should stop using the compression they use and start using monaural WMA compression with a CBR of 20 kbps or less and a sample rate of at least 44.1 KHz. Oh, you want music over your cell phone? Of course that means fewer users per MHz. Very roughly, the current 8Kbits/sec encoding rate, compared to your 44Kbit/sec, will only handle about 1/5th the number of users. So, your cell phone bill goes up about 5 times. Of course you don't mind because you'll have hi-fi oozing out of your phone. You might want to research variable rate codecs, such as EVRC. 1. In its uncompressed form, the audio must have a bit-resolution of at least 16-bit The encoding resolution is not changed by compression. If you encode something with 16 bit resolution, and compress it, you still have 16 bit data coming out. It's the data rate or thruput that changes with compression. 2. The sample-rate of the compressed and the uncompressed version of the audio must be the same. Not possible. If the rate in and rate out are identical, then there's no compression happening. At least you're consistent. You got everything wrong, again. -- - |
#4
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![]() "Jeff Liebermann" wrote in message ... Radium hath wroth: On Jul 1, 7:24 am, wrote in http://groups.google.com/group/sci.e...0c8ed13?hl=en& how would u like to change the cell phone industry? Analog cell phones should stop using FM and should start using AM at whatever practical radio frequencies available. Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06/analog-cellphone-service-to-end-after.html I won't be sending you a valentine card. You're not my type. Are you also working on whale oil products and sealing wax? The FCC does not require that analog service be turned off. Only that carriers are not required to continue analog service past that date. A good number of rural areas will probably continue to use Analog cellualr service for a few years after that. Digital cell phones should stop using the compression they use and start using monaural WMA compression with a CBR of 20 kbps or less and a sample rate of at least 44.1 KHz. Oh, you want music over your cell phone? Of course that means fewer users per MHz. Very roughly, the current 8Kbits/sec encoding rate, compared to your 44Kbit/sec, will only handle about 1/5th the number of users. So, your cell phone bill goes up about 5 times. Of course you don't mind because you'll have hi-fi oozing out of your phone. You might want to research variable rate codecs, such as EVRC. 1. In its uncompressed form, the audio must have a bit-resolution of at least 16-bit The encoding resolution is not changed by compression. If you encode something with 16 bit resolution, and compress it, you still have 16 bit data coming out. It's the data rate or thruput that changes with compression. 2. The sample-rate of the compressed and the uncompressed version of the audio must be the same. Not possible. If the rate in and rate out are identical, then there's no compression happening. At least you're consistent. You got everything wrong, again. -- Jeff Liebermann 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
#5
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On Thu, 19 Jul 2007 10:38:21 -0400, "Dana" wrote:
Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06/analog-cellphone-service-to-end-after.html The FCC does not require that analog service be turned off. Only that carriers are not required to continue analog service past that date. A good number of rural areas will probably continue to use Analog cellualr service for a few years after that. True. Analog will probably dribble along for quite a while. The only plans that I've heard or read are Verizon's. They're going to (or already have) change the PRL (preferred roaming list) to not include analog roaming. I know a local die hard who was informed in writing that analog will be "going away" in Feb 2008 and that they will not renew his contract for analog after that date. I haven't seen the actual letter so I don't know if there are any details such as the date they'll pull the plug on him. I had the same issue with Verizon and a non-GPS enabled cell phone, where they refused to renew the contract with the old phone. That means that all analog phones might be gone by the time the current contracts expire, which would a maximum of 2 years (probably much less). at&t will probably do the same thing. The only analog systems they still operate are the 800MHz TDMA systems they inherited from Dobson, Cell One, and others. You'll probably get a Valentine greeting card from at&t announcing the demise of analog. Incidentally, at&t discontinued its CDPD (cellular digital packet data) service in mid 2004. Verizon did the same a year later. Yet, I still am getting sync and carrier for CDPD on my Novatel(?) CDPD modem. As I mentioned in another thread, there are still IMTS tones on the air. I guess old services never seem to die completely. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com # http://www.LearnByDestroying.com AE6KS |
#6
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On Thu, 19 Jul 2007 14:33:43 -0700, Jeff Liebermann
wrote in : On Thu, 19 Jul 2007 10:38:21 -0400, "Dana" wrote: Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06/analog-cellphone-service-to-end-after.html The FCC does not require that analog service be turned off. Only that carriers are not required to continue analog service past that date. A good number of rural areas will probably continue to use Analog cellualr service for a few years after that. True. Analog will probably dribble along for quite a while. ... I seriously doubt it. All the carrier people I know are chomping at the bit to turn it off, as noted in public statements. -- Best regards, FAQ FOR CINGULAR WIRELESS: John Navas http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ |
#8
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![]() "John Navas" wrote in message ... On Thu, 19 Jul 2007 14:33:43 -0700, Jeff Liebermann wrote in : On Thu, 19 Jul 2007 10:38:21 -0400, "Dana" wrote: Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06/analog-cellphone-service-to-end-after.html The FCC does not require that analog service be turned off. Only that carriers are not required to continue analog service past that date. A good number of rural areas will probably continue to use Analog cellualr service for a few years after that. True. Analog will probably dribble along for quite a while. ... I seriously doubt it. All the carrier people I know are chomping at the bit to turn it off, as noted in public statements. He said dribble, and that would be true for rural areas, as there is no big push to change much out in the rural areas. -- Best regards, FAQ FOR CINGULAR WIRELESS: John Navas http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ |
#9
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![]() "Jeff Liebermann" wrote in message ... On Thu, 19 Jul 2007 10:38:21 -0400, "Dana" wrote: Why bother? Analog cell phones are going away on Valentine's Day 2008. http://dialzero.blogspot.com/2007/06/analog-cellphone-service-to-end-after.html The FCC does not require that analog service be turned off. Only that carriers are not required to continue analog service past that date. A good number of rural areas will probably continue to use Analog cellualr service for a few years after that. True. Analog will probably dribble along for quite a while. The only plans that I've heard or read are Verizon's. They're going to (or already have) change the PRL (preferred roaming list) to not include analog roaming. I know a local die hard who was informed in writing that analog will be "going away" in Feb 2008 and that they will not renew his contract for analog after that date. I haven't seen the actual letter so I don't know if there are any details such as the date they'll pull the plug on him. I had the same issue with Verizon and a non-GPS enabled cell phone, where they refused to renew the contract with the old phone. That means that all analog phones might be gone by the time the current contracts expire, which would a maximum of 2 years (probably much less). at&t will probably do the same thing. The only analog systems they still operate are the 800MHz TDMA systems they inherited from Dobson, Cell One, and others. You'll probably get a Valentine greeting card from at&t announcing the demise of analog. Incidentally, at&t discontinued its CDPD (cellular digital packet data) service in mid 2004. Verizon did the same a year later. Yet, I still am getting sync and carrier for CDPD on my Novatel(?) CDPD modem. As I mentioned in another thread, there are still IMTS tones on the air. I guess old services never seem to die completely. True enough, Up here in Southwestern Alaska, I am maintaining an old Novatel that was branded up to Nortel amps system. We run an old MTX DMS 100 switch along with these 8 Amps cell sites. We are looking at a CDMA system from Lemko. -- # Jeff Liebermann 150 Felker St #D Santa Cruz CA 95060 # 831-336-2558 # http://802.11junk.com # http://www.LearnByDestroying.com AE6KS |
#10
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Radium wrote:
On Jul 1, 7:24 am, wrote in http://groups.google.com/group/sci.e...0c8ed13?hl=en& : how would u like to change the cell phone industry? Analog cell phones should stop using FM and should start using AM at whatever practical radio frequencies available. Digital cell phones should stop using the compression they use and start using monaural WMA compression with a CBR of 20 kbps or less and a sample rate of at least 44.1 KHz. In addition, the following must also apply: 1. In its uncompressed form, the audio must have a bit-resolution of at least 16-bit 2. The sample-rate of the compressed and the uncompressed version of the audio must be the same. Darn: I was just getting used to your purposed long-wave cell phone. The approximately mile long antennas would drastically cut down on people trying to drive and talk at the same time, just think how many lives that could be saved. Oh well, I just wait for it to appear along with my Matel Hover board and "Mr Fusion" reactor for my Delorean. Ken |
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