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Re: Codec2
When dealing with music, I consider myself an audiophile. When I buy a CD, I rip it to my home server in the FLAC format; No, I don't carry loss less audio around on my portable devices... But I
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When dealing with music, I consider myself an audiophile. When I buy a CD, I rip it to my home server in the FLAC format; No, I don't carry loss less audio around on my portable devices... But I
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By
Tyrell Berry <kd7kuj@...>
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#91
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Re: Codec2
Witness, in order of decreasing quality, conversations from:
*) Analog phone -> analog phone
*) Analog phone -> cell-phone
*) cell-phone -> cell-phone, same technology
*) cell-phone
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Witness, in order of decreasing quality, conversations from:
*) Analog phone -> analog phone
*) Analog phone -> cell-phone
*) cell-phone -> cell-phone, same technology
*) cell-phone
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By
"Curt, WE7U" <curt.we7u@...>
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#93
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Re: Codec2
Tim
If this was professional radio, then I'd agree. But it isn't - it's hobby radio, and the goal is to experiment, not to provide a service-provider grade network.
As a friend of mine recently
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Tim
If this was professional radio, then I'd agree. But it isn't - it's hobby radio, and the goal is to experiment, not to provide a service-provider grade network.
As a friend of mine recently
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By
"David Lake (dlake)" <dlake@...>
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#95
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Re: Codec2
A good point! We'll have to see what shakes out as the experimenters "experiment" with linking digital systems.
73 de Tim, AF1G
---- Tyrell Berry <kd7kuj@...> wrote:
=============
When dealing
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A good point! We'll have to see what shakes out as the experimenters "experiment" with linking digital systems.
73 de Tim, AF1G
---- Tyrell Berry <kd7kuj@...> wrote:
=============
When dealing
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By
Tim Hardy AF1G <hardyt@...>
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#96
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Open Source Hardware...
... doesn't exist.
This forum has been wonderfully active on a variety of topics. It's great to see the exchange as hams weigh in with their hopes and dreams, but there is one topic that I need to
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... doesn't exist.
This forum has been wonderfully active on a variety of topics. It's great to see the exchange as hams weigh in with their hopes and dreams, but there is one topic that I need to
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By
UniversalDigitalRadio-owner@...
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#92
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Re: Open Source Hardware...
Brian,
The Winlink development team would be interested in purchasing two unitswhen available through our 501C3 organization the Amateur Radio safetyFoundation. www.arsfi.org We have anumber sights
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Brian,
The Winlink development team would be interested in purchasing two unitswhen available through our 501C3 organization the Amateur Radio safetyFoundation. www.arsfi.org We have anumber sights
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By
"Rick Muething" <rmuething@...>
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#94
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Re: Open Source Hardware...
the comment “ … doesn’t exist” is in accurate.
Ardruino is very open source hardware. (all the way down to the boot loader, and development packages)
Fpga projects can be open source
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the comment “ … doesn’t exist” is in accurate.
Ardruino is very open source hardware. (all the way down to the boot loader, and development packages)
Fpga projects can be open source
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By
"William Stillwell - KI4SWY" <wkstill@...>
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#97
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Re: Codec2
I would add that there has been a lot of work done looking at tandeming vocoders. Conclusion a noticeable loss in audio quality measured in the mean opinion score. If you could find a way to bridge
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I would add that there has been a lot of work done looking at tandeming vocoders. Conclusion a noticeable loss in audio quality measured in the mean opinion score. If you could find a way to bridge
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By
Tom Azlin N4ZPT <tom@...>
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#98
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Re: Open Source Hardware...
A few years back, there was an organization that developed two open source phone called the Openmoko Neo and Freerunner. The devices were nearly entirely open source... Everything but the GSM Radio,
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A few years back, there was an organization that developed two open source phone called the Openmoko Neo and Freerunner. The devices were nearly entirely open source... Everything but the GSM Radio,
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By
Tyrell Berry <kd7kuj@...>
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#99
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Re: Codec2
True, useful in densely populated areas. Out where I am, where there's fewer repeaters and bigger distances, I'm concerned about the cost of that increased capacity - namely the effect on range,
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True, useful in densely populated areas. Out where I am, where there's fewer repeaters and bigger distances, I'm concerned about the cost of that increased capacity - namely the effect on range,
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#100
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Re: Codec2
Actually, there is a way, but it requires some money thrown at the problem. I have a German built DSP that is incredibly effectively at removing FM background noise. Maybe something to experiment
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Actually, there is a way, but it requires some money thrown at the problem. I have a German built DSP that is incredibly effectively at removing FM background noise. Maybe something to experiment
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#101
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Re: Codec2
Another reason to push the network translation to the edge of the network, and another reason why EchoIRLP was better than other cross network solutions at the time. If you have multi protocol
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Another reason to push the network translation to the edge of the network, and another reason why EchoIRLP was better than other cross network solutions at the time. If you have multi protocol
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#102
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Re: Codec2
Which is a good reason to be clever about how we do things. :) I'm a believer in fiddling with the signal as little as possible, for this very reason.
73 de VK3JED / VK3IRL
http://vkradio.com
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Which is a good reason to be clever about how we do things. :) I'm a believer in fiddling with the signal as little as possible, for this very reason.
73 de VK3JED / VK3IRL
http://vkradio.com
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#103
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Cross linking (Was: Codec2)
The argument that analog should never be linked to digital because of white noise and other artifacts forgets that Vocoders (as opposed to Codecs) like AMBE and Codec-2 are specifically looking for
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The argument that analog should never be linked to digital because of white noise and other artifacts forgets that Vocoders (as opposed to Codecs) like AMBE and Codec-2 are specifically looking for
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By
"John D. Hays" <john@...>
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#104
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Re: Cross linking (Was: Codec2)
John
Completely agree.
Where I’ve interworked FM to D-Star, I’ve found the results to be perfectly acceptable within the confines of Amateur Radio.
You wouldn’t want to listen to
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John
Completely agree.
Where I’ve interworked FM to D-Star, I’ve found the results to be perfectly acceptable within the confines of Amateur Radio.
You wouldn’t want to listen to
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By
"David Lake (dlake)" <dlake@...>
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#105
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Re: Cross linking (Was: Codec2)
John,
I think as long as the proper display is there, someone using the 1.2k gmsk modem with analog audio (or echolink with callsign pass-through) won't really be noticed. It will probably require
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John,
I think as long as the proper display is there, someone using the 1.2k gmsk modem with analog audio (or echolink with callsign pass-through) won't really be noticed. It will probably require
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By
Matthew Pitts <daywalker_blade_2004@...>
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#106
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Re: Cross linking (Was: Codec2)
Matthew,
The truth of the matter is, for linking, it just doesn't matter. Having a proper callsign in the "MY" field only matters in two places:
1. If going through an Icom G2 gateway which looks to
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Matthew,
The truth of the matter is, for linking, it just doesn't matter. Having a proper callsign in the "MY" field only matters in two places:
1. If going through an Icom G2 gateway which looks to
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By
"John D. Hays" <john@...>
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#107
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Re: Cross linking (Was: Codec2)
The entire “MY” call is unenforceable. It is sent in clear text, is programmed by the user and therefore is suspicious.
By default, my code does not check D-Star MY calls for one simple
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The entire “MY” call is unenforceable. It is sent in clear text, is programmed by the user and therefore is suspicious.
By default, my code does not check D-Star MY calls for one simple
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By
"David Lake (dlake)" <dlake@...>
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#108
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Re: Cross linking (Was: Codec2)
A key issue identified many years ago is that control over what sort of traffic should be allowed to pass through a gateway should be in hands of the administrator of that particular gateway/repeater.
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A key issue identified many years ago is that control over what sort of traffic should be allowed to pass through a gateway should be in hands of the administrator of that particular gateway/repeater.
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#109
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Re: Cross linking (Was: Codec2)
At the end of the day, all that the majority of
people want to be able to do is talk to their
friends around the world, and not have to jump
through political hoops to do so.
Similar observations in
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At the end of the day, all that the majority of
people want to be able to do is talk to their
friends around the world, and not have to jump
through political hoops to do so.
Similar observations in
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By
"Tony Langdon, VK3JED" <vk3jed@...>
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#110
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