|
Sounds of digital
Hi agng,
At one time I had bookmarked a site that had audio files of what various digital modes sounded like as an aid to recognizing them on the air. Now I can't find it. :-/ Anyone know of one? Thanks! |
Sounds of digital
"Bob Liesenfeld" wrote in message ... Hi agng, At one time I had bookmarked a site that had audio files of what various digital modes sounded like as an aid to recognizing them on the air. Now I can't find it. :-/ Anyone know of one? Thanks! This URL perhaps? http://www.kb9ukd.com/digital/ CL |
Sounds of digital
Here's Ibiquity testing in Cincinnati in 2001 on 1660kHz (heard in Central Ohio)
WQSN in Kalamazoo MI in the first few seconds, with Cincinnati phased away. http://rhhardin.home.mindspring.com/wd2xam.ram -- Ron Hardin On the internet, nobody knows you're a jerk. |
Sounds of digital
"Ron Hardin" wrote in message ... Here's Ibiquity testing in Cincinnati in 2001 on 1660kHz (heard in Central Ohio) WQSN in Kalamazoo MI in the first few seconds, with Cincinnati phased away. Keep in mind that the algorithm used then is nothing like the one in use now to the extent that anything that old is irrelevant. |
Sounds of digital
"Brenda Ann" wrote in message ... "Ron Hardin" wrote in message ... Here's Ibiquity testing in Cincinnati in 2001 on 1660kHz (heard in Central Ohio) WQSN in Kalamazoo MI in the first few seconds, with Cincinnati phased away. http://rhhardin.home.mindspring.com/wd2xam.ram -- It's lovely... sounds exactly like one of the N. Korean jammers.. It's about 10 generations back in the codec and algorithm development. |
Sounds of digital
David Eduardo wrote: "Ron Hardin" wrote in message ... Here's Ibiquity testing in Cincinnati in 2001 on 1660kHz (heard in Central Ohio) WQSN in Kalamazoo MI in the first few seconds, with Cincinnati phased away. Keep in mind that the algorithm used then is nothing like the one in use now to the extent that anything that old is irrelevant. Actually, on second thought, I take this back. It's surprising sometimes how useful some of these old algorithms are. |
Sounds of digital
David Eduardo wrote: "Brenda Ann" wrote in message ... "Ron Hardin" wrote in message ... Here's Ibiquity testing in Cincinnati in 2001 on 1660kHz (heard in Central Ohio) WQSN in Kalamazoo MI in the first few seconds, with Cincinnati phased away. http://rhhardin.home.mindspring.com/wd2xam.ram -- It's lovely... sounds exactly like one of the N. Korean jammers.. It's about 10 generations back in the codec and algorithm development. Well, maybe no 10 generations, but two generations at least. Definitely one generation. I think. |
Sounds of digital
"Caveat Lector" wrote in message ... "Bob Liesenfeld" wrote in message ... Hi agng, At one time I had bookmarked a site that had audio files of what various digital modes sounded like as an aid to recognizing them on the air. Now I can't find it. :-/ Anyone know of one? Thanks! This URL perhaps? http://www.kb9ukd.com/digital/ CL Nice link. Thanks. -- rb |
Sounds of digital
On Mar 20, 10:58 pm, "David Eduardo" wrote:
"Telamon" wrote in message ... .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. Actually I spoke too soon. Stations don't upgrade the software each time there's a codec or software change, but they do it occasionally, depending on what else is going on. It's hard to keep track of how many times you done it, though. Who can keep track of these things? |
Sounds of digital
In article .com,
"David Eduardo" wrote: David Eduardo wrote: "Brenda Ann" wrote in message ... "Ron Hardin" wrote in message ... Here's Ibiquity testing in Cincinnati in 2001 on 1660kHz (heard in Central Ohio) WQSN in Kalamazoo MI in the first few seconds, with Cincinnati phased away. http://rhhardin.home.mindspring.com/wd2xam.ram -- It's lovely... sounds exactly like one of the N. Korean jammers.. It's about 10 generations back in the codec and algorithm development. Well, maybe no 10 generations, but two generations at least. Definitely one generation. I think. And I take it YOU are the next generation. -- Telamon Ventura, California |
Sounds of digital
In article ,
"David Eduardo" wrote: "Telamon" wrote in message ... .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. OK David lets try out this little poser on you the man with all the answers. If the IBOC comes out on a ASIC and then the codec changes then what about all the radios out there with old chip in them? Do they stop working? Will they only be able to receive stations using the old codec? -- Telamon Ventura, California |
Sounds of digital
"Telamon" wrote in message ... In article , "David Eduardo" wrote: "Telamon" wrote in message ... .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. OK David lets try out this little poser on you the man with all the answers. If the IBOC comes out on a ASIC and then the codec changes then what about all the radios out there with old chip in them? Do they stop working? Will they only be able to receive stations using the old codec? -- Telamon Ventura, California Can I field this one? Our AFN satellite receivers have to update themselves every few months. AFN sends the updates down from the bird and the receiver downloads and installs them. I'm no fan of IBOC, of course, but I see no reason that the ASIC (not knowing the particulars of the chip) couldn't be designed to do the same (Flash RAM or some such). -- Posted via a free Usenet account from http://www.teranews.com |
Sounds of digital
In article ,
"Brenda Ann" wrote: "Telamon" wrote in message ... In article , "David Eduardo" wrote: "Telamon" wrote in message . .. .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. OK David lets try out this little poser on you the man with all the answers. If the IBOC comes out on a ASIC and then the codec changes then what about all the radios out there with old chip in them? Do they stop working? Will they only be able to receive stations using the old codec? Can I field this one? Our AFN satellite receivers have to update themselves every few months. AFN sends the updates down from the bird and the receiver downloads and installs them. I'm no fan of IBOC, of course, but I see no reason that the ASIC (not knowing the particulars of the chip) couldn't be designed to do the same (Flash RAM or some such). To bad for the rest of us you had to answer that question. I wanted to see David fumble it. Spoiler. -- Telamon Ventura, California |
Sounds of digital
"Telamon" wrote in message ... In article , "David Eduardo" wrote: "Telamon" wrote in message ... .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. OK David lets try out this little poser on you the man with all the answers. If the IBOC comes out on a ASIC and then the codec changes then what about all the radios out there with old chip in them? Do they stop working? Will they only be able to receive stations using the old codec? No changes in the receiver. All modifications are in the transmission system, not the receiver. |
Sounds of digital
"Telamon" wrote in message ... Can I field this one? Our AFN satellite receivers have to update themselves every few months. AFN sends the updates down from the bird and the receiver downloads and installs them. I'm no fan of IBOC, of course, but I see no reason that the ASIC (not knowing the particulars of the chip) couldn't be designed to do the same (Flash RAM or some such). To bad for the rest of us you had to answer that question. I wanted to see David fumble it. Spoiler. Most of the algorithm and codec changes have been one sided... and all of them have been since ver. 2 of the design specs were released last year prior to the "Official" launch of HD in June. What has been changed, per our engineers who looked at the update bulletins, with some frequency is the system that distributes content in the individual digital sidebands, to make it even less error prone, and certain one-sided codec changes on the AM audio (this may just be iBiquity saying they polished the code a bit). It all constitutes fine tuning at this stage. |
Sounds of digital
David Eduardo wrote: "Telamon" wrote in message ... In article , "David Eduardo" wrote: "Telamon" wrote in message ... .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. OK David lets try out this little poser on you the man with all the answers. If the IBOC comes out on a ASIC and then the codec changes then what about all the radios out there with old chip in them? Do they stop working? Will they only be able to receive stations using the old codec? No changes in the receiver. All modifications are in the transmission system, not the receiver. Actually, now that I think about it there were some changes in the receiver. Let me get back to you on this. |
Sounds of digital
David Eduardo wrote: "Telamon" wrote in message ... Can I field this one? Our AFN satellite receivers have to update themselves every few months. AFN sends the updates down from the bird and the receiver downloads and installs them. I'm no fan of IBOC, of course, but I see no reason that the ASIC (not knowing the particulars of the chip) couldn't be designed to do the same (Flash RAM or some such). To bad for the rest of us you had to answer that question. I wanted to see David fumble it. Spoiler. Most of the algorithm and codec changes have been one sided... and all of them have been since ver. 2 of the design specs were released last year prior to the "Official" launch of HD in June. What has been changed, per our engineers who looked at the update bulletins, with some frequency is the system that distributes content in the individual digital sidebands, to make it even less error prone, and certain one-sided codec changes on the AM audio (this may just be iBiquity saying they polished the code a bit). It all constitutes fine tuning at this stage. Sorry, I meant this as a response to a different post. Please ignore. |
Sounds of digital
In article ,
"David Eduardo" wrote: "Telamon" wrote in message ... Can I field this one? Our AFN satellite receivers have to update themselves every few months. AFN sends the updates down from the bird and the receiver downloads and installs them. I'm no fan of IBOC, of course, but I see no reason that the ASIC (not knowing the particulars of the chip) couldn't be designed to do the same (Flash RAM or some such). To bad for the rest of us you had to answer that question. I wanted to see David fumble it. Spoiler. Most of the algorithm and codec changes have been one sided... and all of them have been since ver. 2 of the design specs were released last year prior to the "Official" launch of HD in June. What has been changed, per our engineers who looked at the update bulletins, with some frequency is the system that distributes content in the individual digital sidebands, to make it even less error prone, and certain one-sided codec changes on the AM audio (this may just be iBiquity saying they polished the code a bit). It all constitutes fine tuning at this stage. Polishing the noise, a new concept. -- Telamon Ventura, California |
Sounds of digital
In article ,
"David Eduardo" wrote: "Telamon" wrote in message ... In article , "David Eduardo" wrote: "Telamon" wrote in message . .. .. It's about 10 generations back in the codec and algorithm development. Yeah, like you know what you are talking about. Not. Since every station upgrades the software in the HD equipment each time there is a codec or software change, we should know how many times it is revised. OK David lets try out this little poser on you the man with all the answers. If the IBOC comes out on a ASIC and then the codec changes then what about all the radios out there with old chip in them? Do they stop working? Will they only be able to receive stations using the old codec? No changes in the receiver. All modifications are in the transmission system, not the receiver. Your explanation leaves a little to be desired. If the sidebands were differentiated what was the difference or reason? -- Telamon Ventura, California |
| All times are GMT +1. The time now is 11:42 AM. |
Powered by vBulletin® Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
RadioBanter.com