>WELL PHOOEY, that won't do. We will have to work on how optimize the >settings
I've been hesitant to mention NR because everyone seems satisfied with it, however personally I've never found the results to be as good as the outboard units from companies such as BHI in the UK and Michels-Engineering in Germany in getting rid of, for example, low band "frying bacon" type qrn and general hash etc . The german unit is designed specifically for the extraction of the speech waveform when surrounded by noise. BHI is similar but works with cw as well. NR was greatly enhanced with the introduction of Block LMS but to my mind/ear still introduces a sort of muddiness to the audio, a loss of brightness etc which the outboard units (especially the Michels unit) do not. Remember I'm talking weak signal SSB, 160/80/40 gray line dx etc. I suspect that the cw guys are quite happy with NR as it stands. Perhaps we need two separate NR systems, one specifically designed for the recovery of speech and the other for cw, in the presence of noise. Its difficult to describe in words so here are a couple of links to some audio samples of both units in operation http://www.home.vrweb.de/michels/sound_demo.htm http://www.radio.bhinstrumentation.co.uk/html/demonstration.html There is a downside to using these units in that they are only capable of working with a mono input so I loose the binaural (which is a shame) and sub rx functions, but hey you can't have everything.............. or can we :-) Regards to all Trevor G0KTN _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
