Re: [Elecraft] K4 -- Spectral subtraction noise reduction
And, it will work on digital modes. John WA1EAZ > On Sep 11, 2020, at 6:30 PM, Grant Youngman wrote: > > You can’t really compare an NIR-12 to a more current implementation. The > KiwiSDR algorithm runs on a BeagleBone processor with virtually no > discernible artifacts. The artifacts were the achilles heel of the NIR-12. > I had one for a while. Never liked it. > > Presuming Elecraft delivers what they have said they’re working on, it will > be a great addition to the radio. > > Grant NQ5T > >> On Sep 11, 2020, at 3:23 PM, Tom Doligalski via Elecraft >> wrote: >> >> Spectral subtraction was used in the JPS noise reduction units long ago. I >> still have my NIR-12. >> >> Tom W4KX >> >> Sent from my iPad >> >>> On Sep 11, 2020, at 12:21 PM, Wes wrote: >>> >>> https://www.rtl-sdr.com/forum-talk-videos-from-hamvention-2017/ 51 minutes >>> in. >>> > > __ > 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 > Message delivered to jstengrev...@comcast.net __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 -- Spectral subtraction noise reduction
You can’t really compare an NIR-12 to a more current implementation. The KiwiSDR algorithm runs on a BeagleBone processor with virtually no discernible artifacts. The artifacts were the achilles heel of the NIR-12. I had one for a while. Never liked it. Presuming Elecraft delivers what they have said they’re working on, it will be a great addition to the radio. Grant NQ5T > On Sep 11, 2020, at 3:23 PM, Tom Doligalski via Elecraft > wrote: > > Spectral subtraction was used in the JPS noise reduction units long ago. I > still have my NIR-12. > > Tom W4KX > > Sent from my iPad > >> On Sep 11, 2020, at 12:21 PM, Wes wrote: >> >> https://www.rtl-sdr.com/forum-talk-videos-from-hamvention-2017/ 51 minutes >> in. >> __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 -- Spectral subtraction noise reduction
Spectral subtraction was used in the JPS noise reduction units long ago. I still have my NIR-12. Tom W4KX Sent from my iPad > On Sep 11, 2020, at 12:21 PM, Wes wrote: > > https://www.rtl-sdr.com/forum-talk-videos-from-hamvention-2017/ 51 minutes > in. > > Wes N7WS > > > >> On 9/11/2020 6:32 AM, Kurt Pawlikowski wrote: >> Grant, >> >> You peaked my interest. I attempted to find examples of spectral >> subtraction and only found talks about it (no audio examples). Would you >> happen to know where I might find some examples? Maybe comparing results >> between several noise reduction methods? >> >> Thanks! >> >> kurtt WB9FMC >> >>> On 9/10/2020 11:19 PM, Grant Youngman wrote: >>> I’ve recently been exploring quite a few of the many SDR receivers on >>> KiwiSDR. One of the (many) features of this system is an option to select >>> spectral subtraction NR. >>> >>> I’m now really hyped about the fact that this will be available at some >>> point on the K4. It works exceptionally well. So well, that I leave it >>> turned on most of the time. Often, stations you can barely copy down in >>> the junk literally pop up out of the noise. Don’t know if this will be >>> available at initial shipment, but it’s certainly something to look forward >>> to if not. I’ve only tried it on AM and SSB at this point, so not sure >>> about CW. >>> >>> Just something else to whet the appetite for that eventual “you’re up” >>> email from Elecraft sales … :) >>> >>> Grant NQ5T >>> __ >>> 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 >>> Message delivered to ku...@pinrod.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 >> Message delivered to wes_n...@triconet.org > > > __ > 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 > Message delivered to w...@mac.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 -- Spectral subtraction noise reduction
https://www.rtl-sdr.com/forum-talk-videos-from-hamvention-2017/ 51 minutes in. Wes N7WS On 9/11/2020 6:32 AM, Kurt Pawlikowski wrote: Grant, You peaked my interest. I attempted to find examples of spectral subtraction and only found talks about it (no audio examples). Would you happen to know where I might find some examples? Maybe comparing results between several noise reduction methods? Thanks! kurtt WB9FMC On 9/10/2020 11:19 PM, Grant Youngman wrote: I’ve recently been exploring quite a few of the many SDR receivers on KiwiSDR. One of the (many) features of this system is an option to select spectral subtraction NR. I’m now really hyped about the fact that this will be available at some point on the K4. It works exceptionally well. So well, that I leave it turned on most of the time. Often, stations you can barely copy down in the junk literally pop up out of the noise. Don’t know if this will be available at initial shipment, but it’s certainly something to look forward to if not. I’ve only tried it on AM and SSB at this point, so not sure about CW. Just something else to whet the appetite for that eventual “you’re up” email from Elecraft sales … :) Grant NQ5T __ 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 Message delivered to ku...@pinrod.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 Message delivered to wes_n...@triconet.org __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 -- Spectral subtraction noise reduction
Grant, You peaked my interest. I attempted to find examples of spectral subtraction and only found talks about it (no audio examples). Would you happen to know where I might find some examples? Maybe comparing results between several noise reduction methods? Thanks! kurtt WB9FMC On 9/10/2020 11:19 PM, Grant Youngman wrote: I’ve recently been exploring quite a few of the many SDR receivers on KiwiSDR. One of the (many) features of this system is an option to select spectral subtraction NR. I’m now really hyped about the fact that this will be available at some point on the K4. It works exceptionally well. So well, that I leave it turned on most of the time. Often, stations you can barely copy down in the junk literally pop up out of the noise. Don’t know if this will be available at initial shipment, but it’s certainly something to look forward to if not. I’ve only tried it on AM and SSB at this point, so not sure about CW. Just something else to whet the appetite for that eventual “you’re up” email from Elecraft sales … :) Grant NQ5T __ 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 Message delivered to ku...@pinrod.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 Message delivered to arch...@mail-archive.com
[Elecraft] K4 -- Spectral subtraction noise reduction
I’ve recently been exploring quite a few of the many SDR receivers on KiwiSDR. One of the (many) features of this system is an option to select spectral subtraction NR. I’m now really hyped about the fact that this will be available at some point on the K4. It works exceptionally well. So well, that I leave it turned on most of the time. Often, stations you can barely copy down in the junk literally pop up out of the noise. Don’t know if this will be available at initial shipment, but it’s certainly something to look forward to if not. I’ve only tried it on AM and SSB at this point, so not sure about CW. Just something else to whet the appetite for that eventual “you’re up” email from Elecraft sales … :) Grant NQ5T __ 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 Message delivered to arch...@mail-archive.com
