Re: [Elecraft] Does the K3S DSP support LMS noise reduction ?
The K3 and thus presumably the K3S implements one particular form of the Least Mean Squares algorithm called the Leaky LMS, see Lyle's response some years ago: http://elecraft.365791.n2.nabble.com/K3-NR-td1557606.html#a1557836 That's an adaptive version of a Wiener filter that doesn't get so easily 'stuck' in a non-optimal solution if signal statistics should change drastically. Instead the non-optimal solution 'leaks' out of the filter. The Wiener filter by itself is a fixed signal-to-noise optimizing filter, and thus is fundamentally different from low pass, high pass etc in that the filter's coefficients depend on the input signal. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Does-the-K3S-DSP-support-LMS-noise-reduction-tp7605863p7606068.html Sent from the Elecraft mailing list archive at Nabble.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] Elecraft] Does the K3S DSP support LMS noise reduction?
Bob, Sure didn't mean 40m in vk? Here you will hear such classic gem's like Rodgy, 10-4, swar, loud n proudshould I go on? I better notit's a hoot, but, it does grow old rather quickly. TIC Gary -Original Message- From: Phil Wheeler w...@socal.rr.com Sent: 7/08/2015 2:01 AM To: elecraft@mailman.qth.net elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft] Does the K3S DSP support LMS noise reduction? Bob, You must not listen to 20 SSB much if you consider hams to be fine communicators :-) As for LMS, a local suggested Limited Mental Stability, but I think that has to be op-provided, not by any rig! 73, Phil W7OX On 8/6/15 7:03 AM, Bob McGraw - K4TAX wrote: For those that choose to use acronyms in their writing or communication, it is usually deemed proper to identify the details or translation at the first use of the acronym in any piece. The acronym will then be most likely understood during the reading of the remainder of the piece. After allwe are supposed to be communicators aren't we? Just sayin'. 73 Bob, K4TAX On 8/6/2015 8:00 AM, Chris Hallinan wrote: The simple explanation: LSM stands for Least Mean Square. It's a mathematical algorithm used in digital signal processing to implement a specific type of filter. If you really want the gory details, see here: https://en.wikipedia.org/wiki/Least_mean_squares_filter Of course, this doesn't explain how one would select that algorithm within the K3, as I found no such indication in either the DSP or IF noise blanker selections. Maybe it's unique to the K3S? Dunno. -Chris __ 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 vk1zzg...@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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft] Does the K3S DSP support LMS noise reduction ?
The simple explanation: LSM stands for Least Mean Square. It's a mathematical algorithm used in digital signal processing to implement a specific type of filter. If you really want the gory details, see here: https://en.wikipedia.org/wiki/Least_mean_squares_filter Of course, this doesn't explain how one would select that algorithm within the K3, as I found no such indication in either the DSP or IF noise blanker selections. Maybe it's unique to the K3S? Dunno. -Chris On Wed, Aug 5, 2015 at 10:41 PM, Fred C. Jensen k6...@foothill.net wrote: What is LMS Noise Reduction? I retired when my brain became filled to capacity with acronyms. Any new ones just overflow to the drain. :-) Fred K6DGW Sparks NV Lyle Johnson kk7p4...@gmail.com wrote: Yes, identical to the K3. 73, Lyle KK7P I don't see LMS listed. Does it support that? __ 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 k6...@foothill.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 challi...@gmail.com -- Life is like Linux - it never stands still. __ 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] Elecraft] Does the K3S DSP support LMS noise reduction ?
For those that choose to use acronyms in their writing or communication, it is usually deemed proper to identify the details or translation at the first use of the acronym in any piece. The acronym will then be most likely understood during the reading of the remainder of the piece. After allwe are supposed to be communicators aren't we? Just sayin'. 73 Bob, K4TAX On 8/6/2015 8:00 AM, Chris Hallinan wrote: The simple explanation: LSM stands for Least Mean Square. It's a mathematical algorithm used in digital signal processing to implement a specific type of filter. If you really want the gory details, see here: https://en.wikipedia.org/wiki/Least_mean_squares_filter Of course, this doesn't explain how one would select that algorithm within the K3, as I found no such indication in either the DSP or IF noise blanker selections. Maybe it's unique to the K3S? Dunno. -Chris __ 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] Elecraft] Does the K3S DSP support LMS noise reduction ?
Bob, You must not listen to 20 SSB much if you consider hams to be fine communicators :-) As for LMS, a local suggested Limited Mental Stability, but I think that has to be op-provided, not by any rig! 73, Phil W7OX On 8/6/15 7:03 AM, Bob McGraw - K4TAX wrote: For those that choose to use acronyms in their writing or communication, it is usually deemed proper to identify the details or translation at the first use of the acronym in any piece. The acronym will then be most likely understood during the reading of the remainder of the piece. After allwe are supposed to be communicators aren't we? Just sayin'. 73 Bob, K4TAX On 8/6/2015 8:00 AM, Chris Hallinan wrote: The simple explanation: LSM stands for Least Mean Square. It's a mathematical algorithm used in digital signal processing to implement a specific type of filter. If you really want the gory details, see here: https://en.wikipedia.org/wiki/Least_mean_squares_filter Of course, this doesn't explain how one would select that algorithm within the K3, as I found no such indication in either the DSP or IF noise blanker selections. Maybe it's unique to the K3S? Dunno. -Chris __ 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] Elecraft] Does the K3S DSP support LMS noise reduction ?
What is LMS Noise Reduction? I retired when my brain became filled to capacity with acronyms. Any new ones just overflow to the drain. :-) Fred K6DGW Sparks NV Lyle Johnson kk7p4...@gmail.com wrote: Yes, identical to the K3. 73, Lyle KK7P I don't see LMS listed. Does it support that? __ 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 k6...@foothill.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] Does the K3S DSP support LMS noise reduction ?
Yes, identical to the K3. 73, Lyle KK7P I don't see LMS listed. Does it support that? __ 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] Does the K3S DSP support LMS noise reduction ?
I don't see LMS listed. Does it support that? Thanks in advance. jer __ 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] Does the K3S DSP support LMS noise reduction ?
Absolutely. I'm sure Lyle, KK7P (our DSP engineering) can weigh in with more details. 73, Wayne N6KR On Aug 4, 2015, at 7:23 AM, Jerry Moore je...@carolinaheli.com wrote: I don't see LMS listed. Does it support that? Thanks in advance. jer __ 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 n...@elecraft.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
