[Elecraft] DSP question

[Vic Rosenthal]

Lyle Johnson wrote:

> The nature of the noise reduction algorithm is that it is looking for
> "coherence" in the signal.  Noise, passed through a sufficiently narrow
> filter, sounds more and more like a signal.  So, you can expect that the
> denoise will be less effective as the filter bandwidth is narrowed - but
> then, the narrower bandwidth is taking care of much of the noise.

My thought was that perhaps the NR could process the signal BEFORE the 
narrow (DSP) filter was applied.  Then you could use a narrow filter 
without making the noise that the NR sees more coherent.  Maybe this 
would take two DSP chips?

Vic K2VCO