On Sat, 2006-12-16 at 08:32 -0600, Grant Youngman wrote:
> > Something the ear and spectrum analyzer may show is the
> > character of the attenuated noise. I'd expect an adaptive
> > bandpass filter to have a considerable depth to the skirts
> > and the noise left
>
> It would depend on the number of filter taps, which drives delay and
> processing power requirements. Heck, it's even possible to have the number
> of taps be an adapted parameter (I don't think that's going on in Orion's
> NR, by the way).
>
> It's all speculation in any case. As much as I'd be interested in seeing
> the details of the algorithm du jour, with the number of cooks we have
> guessing about it now, imagine what would happen if the algorithm details
> were actually published :-)
>
> Grant/NQ5T
My point is that the residual noise from filtering will sound like the
original noise but at a reduced level. The residual noise from
autocorrelation doesn't sound like the noise that went in. Whether the
filter has skirts to -123 dB or only to -23 dB...
--
73, Jerry, K0CQ,
All content copyright Dr. Gerald N. Johnson, electrical engineer
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