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1. Topband: DSP and Latency (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Tue, 17 Mar 2015 14:41:01 -0700; What do you mean "solve?" Latency is TIME -- more specifically, it is the time it takes electrical signals to get from point A to point B. If digital transport is involved, there is also the time it; /archives//html/Topband/2015-03/msg00155.html (9,359 bytes)
2. Re: Topband: DSP and Latency (score: 1): Author: Herbert Schoenbohm <herbs@vitelcom.net>; Date: Tue, 17 Mar 2015 19:03:27 -0400; I listen here to Yuri N2TTA operate my remote contest station NP2P (SO2R) here from his apartment in NYC. My latency to his location is about 120 ms and the link is end to end fiber which travels at; /archives//html/Topband/2015-03/msg00158.html (10,676 bytes)
3. Re: Topband: DSP and Latency (score: 1): Author: Tim Shoppa <tshoppa@gmail.com>; Date: Tue, 17 Mar 2015 23:28:14 -0400; Current fastest way of communicating between two points on the planet is via neutrino beam (which travels just fine through solid rock, we don't need no stinking ether or fiber). Incidentally, they u; /archives//html/Topband/2015-03/msg00160.html (11,975 bytes)
4. Re: Topband: DSP and Latency (score: 1): Author: "Mark van Wijk, PA5MW" <pa5mw@home.nl>; Date: Wed, 18 Mar 2015 07:52:25 +0100; Jim, This is a matter of semantics. The word "latency" was only shortly introduced to most of us, linking to that "awkward little time delay while doing audio via internet". The true and longer expla; /archives//html/Topband/2015-03/msg00162.html (11,797 bytes)
5. Re: Topband: DSP and Latency (score: 1): Author: "Mark van Wijk, PA5MW" <pa5mw@home.nl>; Date: Wed, 18 Mar 2015 08:14:58 +0100; Audio latency 'differences' can be shown in the shack already; my TT ORION vs a K2 vs a Perseus SDR show small but significant time differences. Especially the SDR is 'behind'. 73 Mark, PA5MW _______; /archives//html/Topband/2015-03/msg00163.html (8,450 bytes)
6. Re: Topband: DSP and Latency (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 18 Mar 2015 04:27:10 -0700; Yes. I mentioned that A/D and D/A conversions take time. So do DSP processes. The word that describes this time is latency. It is not limited to audio. I had to learn about all of this more than 20 y; /archives//html/Topband/2015-03/msg00165.html (9,351 bytes)
7. Re: Topband: DSP and Latency (score: 1): Author: Bill Cromwell <wrcromwell@gmail.com>; Date: Wed, 18 Mar 2015 10:38:32 -0400; Hi Jim, I have begun playing with soundcard SDR and DSP software. "Latency" varies all over the place (from config to config) and can be somewhat managed. The real sticking place for me is the delay; /archives//html/Topband/2015-03/msg00169.html (11,088 bytes)
8. Re: Topband: DSP and Latency (score: 1): Author: "Gary Smith" <Gary@ka1j.com>; Date: Wed, 18 Mar 2015 11:25:44 -0400; To me, latency in the shack is better described as the time between when the YL says something to me while I'm on the air & when I realize I need to respond. 73, Gary KA1J -- This email has been che; /archives//html/Topband/2015-03/msg00171.html (9,525 bytes)
9. Re: Topband: DSP and Latency (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Wed, 18 Mar 2015 10:48:20 -0700; There is a very straightforward fix for this latency. Simply use a POTS telephone line with a phone patch. Receive audio comes in, and CW tones go out. At the remote site, a tone decoder generates ke; /archives//html/Topband/2015-03/msg00172.html (11,412 bytes)
10. Re: Topband: DSP and Latency (score: 1): Author: "Richard (Rick) Karlquist" <richard@karlquist.com>; Date: Wed, 18 Mar 2015 11:06:11 -0700; managed. The real sticking place for me is the delay between pressing the key (CW of course) and the beginning of the dit or dah. Again when Bill KU8H There is a very straightforward fix for this la; /archives//html/Topband/2015-03/msg00173.html (10,057 bytes)
11. Re: Topband: DSP and Latency (score: 1): Author: Jim Brown <jim@audiosystemsgroup.com>; Date: Wed, 18 Mar 2015 11:40:49 -0700; On Wed,3/18/2015 11:06 AM, Richard (Rick) Karlquist wrote: There is a very straightforward fix for this latency. Simply use a POTS telephone line with a phone patch. Receive audio comes in, and CW to; /archives//html/Topband/2015-03/msg00174.html (10,533 bytes)
12. Re: Topband: DSP and Latency (score: 1): Author: Bill Wichers <billw@waveform.net>; Date: Thu, 19 Mar 2015 02:14:43 +0000; A POTS line *should* have predictable latency *during* any particular call. This is because they operate over circuit-switched networks where the connection/route is established at call initiation an; /archives//html/Topband/2015-03/msg00178.html (13,309 bytes)
13. Re: Topband: DSP and Latency (score: 1): Author: D Rodman MD <rodman@buffalo.edu>; Date: Thu, 19 Mar 2015 06:41:38 -0400; Everything takes time. I have a great example of audio latency. Kitchen has television with direct cable input and family room has digital cable box with HDML to large screen LED set. When watching e; /archives//html/Topband/2015-03/msg00181.html (7,816 bytes)
14. Re: Topband: DSP and Latency (score: 1): Author: "Larry" <lknain@nc.rr.com>; Date: Thu, 19 Mar 2015 07:16:29 -0400; It would be rare for an internet connection to be a single hop. I forget the command (something like tracert) but you can see the nodes where the connection goes. The number of hops is usually minimi; /archives//html/Topband/2015-03/msg00182.html (9,147 bytes)

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