Re: Bridging the digital voice and data gap
"Tony Langdon, VK3JED" <vk3jed@...>
At 04:34 PM 8/1/2012, you wrote:
Not trying to start a flame war (but probably will... I'm sorry in advance), but I feel it's important to point out. Anytime you go from analog to digital, audio quality/information is lost. If you go from D* to DMR, you are taking spoken voice (analog) and making it digital (IMBE) in your radio, the repeater receives the bits and spits out audio again (digital to analog), and encodes it AGAIN as digital (AMBE) to be sent to the received, where it once again gets converted to analog. That's two A-D conversions... each loses quality, and at these bit rates, we don't have much budget for dropping additional audio info. People already complain about it sounding tinny!While the codec conversions are unavoidable, you do NOT have to go all the way back to analog, if you are able to build some suitable hardware. That's already been done for D-STAR, with the DV Dongle being suitable for such a transcoder.
73 de VK3JED / VK3IRL