> > Hi Alberto,
> >
> > In SDRadio and Winradio, to what extent does the "channel skew"
> > amplitude adjustment allow for amplitude unbalance?
> >
> > I intend to do a Monte Carlo evaluation of a QSD/audio pre-
amplifier
> > to discover the maximum tolerance of components which could be
> > balanced out by the software correcting tool.
> >
> > 73,
> >
> > João De Marco, PY2WM
>
> João,
>
> the adjustment range in SDRadio is rather limited, as I didn't
foresee a great imbalance in amplitude. Maybe I was
> wrong, but currently one of the two channels has an amplitude
multiplier that can range from 0.95 to 1.05 when you
> change the slider position in the skew adjustment panel. The tests
I did with my homebrew hardware indicated that this
> range was plenty enough, but some Softrock users have reported
that a greater range maybe would be more indicated. One
> thing to be careful about : the Windows mixer panel for the sound
card has small horizontal sliders for left/right
> balancing. Please make sure that they are exactly in the middle
position, otherwise they will introduce an error greater
> than what my routine is capable to fix...
>
> 73 Alberto I2PHD
>
Thanks Alberto,
That's enough information, I just wanted a ballpark number to start
with.
I guess that when this adjustment range doesn't fix an unbalance
then it is the hardware that needs correction...!
Best regards and 73,
João De Marco, PY2WM
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