Re: [Elecraft] The K4's new noise reduction
Thanks for the NR news Wayne. I love working 160m, and I expect the new NR will be a welcome new tool. Really eager to hear some examples of it at work. 73, Bob N6WG > On May 31, 2019 at 10:11 AM Wayne Burdick wrote: > > > We've recently started testing a new DSP NR (noise reduction) algorithm for > the K4. Our early testers are saying it's as good or better than anything > else they've used, removing stochastic noise without the characteristic > "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB > signals I simply couldn't copy without it. It goes beyond just reducing > listening fatigue. This type of NR operates in the frequency domain, like > spectral subtraction, but without the usual artifacts (musical tones) or long > sampling delays. > > Once the full implementation is complete, we'll post audio samples and > additional details. > > (In answer to the inevitable question: Unfortunately, we won't be able to > port this to the K3/K3S. The new algorithm requires the new, much faster DSP > chip we're using in the K4.) > > 73, > Wayne > N6KR > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
There is a good reason why cross-posting email is a bad idea. This failed on elecraft...@groups.io Could anyone replying please use just the standard elecraft list. On 31/05/2019 21:22, David Woolley wrote: I would think that, at best, there would be no benefit over using a fixed filter, optimised for the mode, and at worst, they would completely break the mode. The ideal digital mode signal looks like noise! COFDM as used for ADSL, digital TV, digital radio, and 4G mobile phones gets quite close to that ideal. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
I would think that, at best, there would be no benefit over using a fixed filter, optimised for the mode, and at worst, they would completely break the mode. The ideal digital mode signal looks like noise! COFDM as used for ADSL, digital TV, digital radio, and 4G mobile phones gets quite close to that ideal. -- David Woolley Owner K2 06123 On 31/05/2019 18:13, John Stengrevics wrote: The K3S’ NR algorithm is not operable on digital modes. Will that be the case on the K4 as well? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
Shoot, That my just be the tipping point for me toward the K4. 73, Ed - KL7UW From: Wayne Burdick To: Elecraft Reflector Cc: elecraft...@groups.io Subject: [Elecraft] The K4's new noise reduction Message-ID: <8fb0faf5-8c7d-4e22-bbd5-4a06982e5...@elecraft.com> Content-Type: text/plain; charset=us-ascii We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR 73, Ed - KL7UW http://www.kl7uw.com Dubus-NA Business mail: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
Olli, You are correct. He did give the answer. Mea culpa. Somehow, I missed that. 73, Barry K3NDM -- Original Message -- From: "Oliver Dröse" To: elecraft@mailman.qth.net Sent: 5/31/2019 1:35:02 PM Subject: Re: [Elecraft] The K4's new noise reduction Didn't Wayne answer your question with his original mail already? Hint: Read his last sentence. ;-) 73, Olli Contest, DX & radio projects: https://www.dh8bqa.de/ Am 31.05.2019 um 19:27 schrieb Barry: Wayne, Will this be implimented for the K3/K3s also?? 73 Barry K3NDM -- Original Message -- From: "Wayne Burdick" To: "Elecraft Reflector" Cc: elecraft...@groups.io Sent: 5/31/2019 1:11:23 PM Subject: [Elecraft] The K4's new noise reduction We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html --- Diese E-Mail wurde von AVG auf Viren geprüft. http://www.avg.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
I'm fairly happy with my K3's NR/NB. I could always use more and better NR, or course, but a major negative for me is the long time it takes for the filter to rebuild when changing NR settings or WIDTH. I hope the K4 will be speedier... 73, Drew AF2Z On 05/31/19 13:11, Wayne Burdick wrote: We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
Didn't Wayne answer your question with his original mail already? Hint: Read his last sentence. ;-) 73, Olli Contest, DX & radio projects: https://www.dh8bqa.de/ Am 31.05.2019 um 19:27 schrieb Barry: Wayne, Will this be implimented for the K3/K3s also?? 73 Barry K3NDM -- Original Message -- From: "Wayne Burdick" To: "Elecraft Reflector" Cc: elecraft...@groups.io Sent: 5/31/2019 1:11:23 PM Subject: [Elecraft] The K4's new noise reduction We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html --- Diese E-Mail wurde von AVG auf Viren geprüft. http://www.avg.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
That sounds promising! A side-by-side comparison of the same noise samples on a K3 would be interesting as well. 73, Drew AF2Z On 05/31/19 13:11, Wayne Burdick wrote: We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
Wayne, Will this be implimented for the K3/K3s also?? 73 Barry K3NDM -- Original Message -- From: "Wayne Burdick" To: "Elecraft Reflector" Cc: elecraft...@groups.io Sent: 5/31/2019 1:11:23 PM Subject: [Elecraft] The K4's new noise reduction We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] The K4's new noise reduction
Hi Wayne, The K3S’ NR algorithm is not operable on digital modes. Will that be the case on the K4 as well? 73, John WA1EAZ > On May 31, 2019, at 1:11 PM, Wayne Burdick wrote: > > We've recently started testing a new DSP NR (noise reduction) algorithm for > the K4. Our early testers are saying it's as good or better than anything > else they've used, removing stochastic noise without the characteristic > "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB > signals I simply couldn't copy without it. It goes beyond just reducing > listening fatigue. This type of NR operates in the frequency domain, like > spectral subtraction, but without the usual artifacts (musical tones) or long > sampling delays. > > Once the full implementation is complete, we'll post audio samples and > additional details. > > (In answer to the inevitable question: Unfortunately, we won't be able to > port this to the K3/K3S. The new algorithm requires the new, much faster DSP > chip we're using in the K4.) > > 73, > Wayne > N6KR > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] The K4's new noise reduction
We've recently started testing a new DSP NR (noise reduction) algorithm for the K4. Our early testers are saying it's as good or better than anything else they've used, removing stochastic noise without the characteristic "hollow" sound of earlier algorithms. In my own tests, I'm finding weak SSB signals I simply couldn't copy without it. It goes beyond just reducing listening fatigue. This type of NR operates in the frequency domain, like spectral subtraction, but without the usual artifacts (musical tones) or long sampling delays. Once the full implementation is complete, we'll post audio samples and additional details. (In answer to the inevitable question: Unfortunately, we won't be able to port this to the K3/K3S. The new algorithm requires the new, much faster DSP chip we're using in the K4.) 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
