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
