[Elecraft] Lyle explains the K3's DSP NR

[Lyle Johnson]

> What I would like to know is the meaning of the various levels of NR as 
> you crank the main knob. T1, T2, T3 etc. Is one better for cw than the 
> other? I find myself using the T1-1 or T1-2 most of the time.

The best way to learn this is to use it and experiment.  There is no 
correct, objective answer because of the psycho-acoustic perception 
variation in the population.  What sounds OK or even good to one person 
may be exceedingly irritating or nerve-wracking to another.

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The "T" value indicates the length of the FIR filter being constructed, 
  Lower values are longer filters and may be thought of as less aggressive.

The second value indicates a mix of processed and unprocessed signals. 
Lower numbers have more unprocessed signal mixed in, so they will be 
less affected by the processing but have a lower limit on achievable 
noise reduction.

And since the K3 is an SDR, this is all subject to change as the 
firmware evolves, or due to customer feedback, or ?

73,

Lyle KK7P