[Elecraft] K3s DSP headroom

[Ramon Tristani]

Important question. Could the designer from Elecraft please answer?



Sent from my iPhone

> On Sep 20, 2016, at 6:12 AM, f1gwr <f1gwr at free.fr> wrote:
> 
> Question for the K3s DSP programmer(s):
> 
> After reading the "audio" thread and trying to optimize my audio equalizer, my questions are: what is the headroom over the 0 dB equalizer? Or does the DSP has its own normalizer/AGC to avoid overload?
> 
> Found a satisfactory setting, with maximum values being set to 0 dB in the voice band (300-3 k), and consequently have to turn the volume halfway in a calm room (audio preset= high).
> 
> My concerns are:
> - not clipping the AF while overflowing the DSP, namely registers during calculations.
> - getting enough AF gain so to have sufficient audio power especially in noisy environments.
> 
> Said in another way what is in practice the maximum safe gain settable in the equalizer?
> 
> VY 73,
> Christian F1GWR in JN38SN
> K3s groupie
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