One way to get better-sounding audio, both on transmit and receive, is to use a wider-bandwidth crystal filter and let the DSP do most of the filtering. Because the digital filter is linear-phase it will sound much more natural than an analog non-linear-phase filter.
That's why I leave ESSB enabled all the time on transmit, with the bandwidth set for minimum. Al N1AL On Fri, 2008-11-07 at 10:55, Dave G4AON wrote: > Members of the RSGB may wish to sneak a preview of the December RadCom > article on SDR where the authors compare a K3 with a HPSDR Mercury > receiver and explain why the SDR sounds better than the K3 (noise > through a crystal filter causing phase changes). > > http://www.rsgb.org/membersonly/radcom/techfeatures/sdr_1208.pdf > > Before you ask, I will not pass the article to non members as it is > copyright material. > > 73 Dave, G4AON > K3/100 #80 and Perseus SDR. > _______________________________________________ > Elecraft mailing list > Post to: [email protected] > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
