Is it possible to implement Noise Reduction in the DSP for Data A mode? Or is it a really stupid idea?
The PSK software I use -- cocoaModem for the Mac -- has a noise reduction mode which works reasonably well when it is receiving a broad spectrum signal -- 2 KHz or more. It does not work well at all when I narrow the DSP bandwidth to eliminate strong nearby signals. This situation leads to the annoying situation where I can copy a weak station when the bandwidth is broad, but not when I have narrowed it to eliminate strong nearby stations. The strong nearby stations overload my SignaLink AtoD converter which keeps me from copying the station. It seems to me the DSP is in a position to apply noise reduction before the narrow band filter, if that is the best way to perform noise reduction. Cheers - Bill, AE6JV ------------------------------------------------------------------------- Bill Frantz | Airline peanut bag: "Produced | Periwinkle (408)356-8506 | in a facility that processes | 16345 Englewood Ave www.pwpconsult.com | peanuts and other nuts." - Duh | Los Gatos, CA 95032 ______________________________________________________________ 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
