This is sorta already there if you have multiple roofing filters. You can define the gain that is added when each filter kicks in.
On Sat, 2009-08-15 at 13:50 -0600, William Carver wrote: > I've noticed in homebrew receivers as the bandwidth narrowed, shedding > noise and QRM I preferred the gain to go up, increaseing the in-passband > signal amplitude. I always attributed it to formative years with a > Heathkit Q multiplier. It may be an effect similar to AGC with > adjustable flatness (May 1996 analog circuit, in DSP of K3). I found I > preferred to have strong signals sound louder rather than perfectly > flat. Prolly a psycho-acoustic explanation (or maybe just get my head > examined?). > > In firmware one could increase the audio gain by an adjustable amount as > the IF bandwidth was decreased, with an operator-settable scaling > number. Say 0 = gain independent of bandwidth, to 100 = gain multiplied > by K * (2800/DSP bandwidth). Very similar to the AGC rise scaling. That > sounds good to me. > > > > ______________________________________________________________ > 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
