[Elecraft] K3S Noise reduction Test

[wa9fvp]

David W. wrote 
 
Noise reduction is about reducing subjective noise for the listener, not about reducing some engineering measurement.  
I replied,
I’m not sure what you mean by “reducing some engineering measurement”. The test was to characterize the K3S NR settings.
David W. wrote
An instrument is likely to generate some very simple, or even pure tone, signal.  With the sorts of strategy used for noise reduction, and very aggressive settings, you could obtain almost perfect results on such a signal, but those same settings would make human speech completely unintelligible. 


I  replied,
That’s true.  My complaint is that there isn’t enough level settings. As soon as you select F1-1, the NR is already on the edge of being too aggressive.  If the setting started at 0 or even 1 and the noise floor dropped in 5db increments,  I wouldn’t have this discussion.
Working in telecom for 30 years and in and in the DSP groups for 15 years, the single tone test is the only way I know to characterize the LMS algorithm. If you have a better test setup, please let me know. 
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Jack WA9FVP- http://www.willcoele.com/radio_repair  <http://www.willcoele.com/radio_repair> 

The Radio Reclamation Center (815) 463-9365
 




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Jack WA9FVP

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