I think we may be comparing apples to oranges here. In the K3 digital ANF, the notch filter is looking for coherent signals. The premise is that audio is less coherent than a CW carrier. Thus the ANF "finds" the coherent CW carrier and notches it out, leaving the remaining audio.
On May 19, 2012, at 4:27 PM, Bill wrote: > You said, "They have gotten so good lately that it is barely > preceptible, but its there, you can see it on a spectrum analyser. > (Google Sabine Adaptive Audio to see a representative device, their > older devices sound quite similar to what you hear in the K3 ANF; the > newer ones are truly magical!)." > > Professional musicians are the pickiest sound folks in the world. What > the K3 does would be most unacceptable to them and I can say that, for > sure, I have never heard similar at any professional music venue. The > musicians would strangle the audio tech if it were so. > > All professional automatic notch filtering used in the music field is > done at the "what we call the audio level." It is their ONLY level, as > they are not working with IFs etc. Hence, I can only assume that the > audio level automatic notch filtering found in the K3 is not yet up to > par. I say "yet" as that is the advantage of updates. At some point in > the future, the ANF can be brought up to higher standards. > > In the interim, there are AGC settings that can be varied - resulting in > more acceptable listening. Specifically, using AGC SLP level at 2 makes > a major improvement to my ears. > > -- > IN GOD I TRUST (but, NOT a single politician) > ______________________________________________________________ > 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
