I agree, in more ways than one, that we are talking apples and oranges here. The code between the devices has similar applications, but a Sabine Feedback Destroyer has multiple instances operating in a dedicated processor with nothing else to do but find the "carriers" while the K3 ANF is sharing its runtime with lots of other "priorities".
Another issue is that the ANF cannot "remove" the audio covered up by the interfering carrier, NOTHING can do this. All ANF can do is throw a notch over the interfering frequency... That is what it does, it cant actually REMOVE the coherent interferance from the "incoherent" intelligence. I was just at the NAB show where I saw a demonstration of a technology that does extract the underlying audio, which was truly magic. Also saw a demo of a video editing system (Adobe Premiere) that has a similar feature built in. Lots of non real time processing is needed to do this magic, however. If the ANF can be made better, great. I find it acceptable. Not perfect, but acceptable. If making it better doubles the price of the radio, then Im not for it, for what its worth :) -lu-w4lt- Message: 24 Date: Sat, 19 May 2012 16:50:24 -0500 From: W4ATK <w4...@bellsouth.net> Subject: Re: [Elecraft] K3 - RX audio degradation with ANF To: Bill <b...@w2blc.net> Cc: elecraft@mailman.qth.net Message-ID: <74bdcaf3-fca6-44df-a0e5-21728e101...@bellsouth.net> Content-Type: text/plain; charset=us-ascii 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. ______________________________________________________________ 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
