OK, I accept what you are all saying about the gain, I was just
postulating :)
I agree it does drop off, but I didn't think that much.
Anyone tried it with CONFIG:AF GAIN set LO? I haven't, just wondered.
If there was a config control for an offset, it would need to be based
on the 4 'strenghts' I think, not on the Fx number, but the digit after
the -
The first value you see -- the Fx -- has to do with the aggressiveness
of the filter. The second value you see specifies the blend of
processed and unprocessed audio.
Keep in mind always that the denoiser is not a denoiser; it is a signal
enhancer. It will act to suppress *everything* until it decides there
is some sort of signal present, then act to pass that signal. The more
the signal appears to be a pure tone (like CW) the faster and more
decisively the algorithm acts. The less it looks like a signal (noisy
SSB comes to mind) the slower and less decisively the algorithm acts.
This is why the audio level is low to begin with.
For CW with reasonable S/N, it usually quickly builds up to the same
overall amplitude as without the NR.
For SSB with poor S/N, it builds up slowly and to a lesser overall
amplitude.
Thus, observations that the signal amplitude sometimes or often appears
reduced are correct. The disagreements about how much it is reduced are
also correct.
It depends on the NR settings, the S/N of the signal you are listening
to at the moment, the type of signal, the IF and AF bandwidth...
FWIW, I usually have mine set to F1-1 or F1-2 for SSB operation. YMMV.
73,
Lyle KK7P
_______________________________________________
Elecraft mailing list
Post to: [email protected]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com
