Hal, Thanks. I think the book is probably over my head. I do hope for more improvements. Still can hear the QRM ringing in my head after Field Day
73 William Abernathy > On Jun 30, 2021, at 10:44 PM, Hal Massey <haljr.mas...@gmail.com> wrote: > > Digital Signal Processing is a field all unto itself. They are definitely > *not* emulating mechanical filters. If they were they would be ringing like a > mechanical filter. A great text is, "Discrete-Time Signal Processing by A. V. > Oppenheim and R. W. Schafer. > > This is good news because we have not plumbed the depths of what can and > can’t be done with DSP yet. > > >> On Jun 30, 2021, at 13:05, William Abernathy <waber...@gmail.com> wrote: >> >> Hi, >> Seems that SDR radios have software emulation of mechanical filters like >> noise reduction. Do you think the future holds new filters written in >> software? I would like a subtraction filter that pulls out the guy 2 KC's >> away. Maybe the 2nd receiver could be tuned in on the station that needs >> to be subtracted from the primary. >> >> What do you think? >> >> Wiliam >> >> -- >> *William Abernathy* >> *aa...@arrl.net <aa...@arrl.net>* >> *AA8XX* >> ______________________________________________________________ >> 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 haljr.mas...@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
