Hello....I downloaded a copy of the demo DSP program from Silcon Pixels a while back called ChromaSound and it seems to be a real neat program to use!! It was fun to play with but I got a newer rig with good DSP so never used this program to buy the full registered version but I think you would find this site and application that meets what you are looking for.
ChromaSOUND is a general-purpose audio DSP program, that provides the following features :
SSB "denoise", for reducing static on SSB signals
Automatic notch filter, for removing tones, heterodynes, and those pesky carriers
Bandpass, Low-Pass, High-Pass, and Band-stop (manual notch) filters
User-defined filters, using the built-in Graphical Filter Designer. Just drag your filter from the design window to an empty button!
Selection of pre-defined filters,
AGC, or Automatic Gain Control for operation under varying conditions
The website address below (pick Amatuer Radio then the ChromaSound DSP page): http://www.siliconpixels.com/
73's and Good DSP hunting de KB9UMT Don