Dick Rollema wrote:
Dear OM, I have been
told there exists a computer program that not only presents received signals
as a waterfall display but can also make one of the signals being heard
as audio via the computer speakers.In that way the computer can
act as a DSP audio filter, perhaps even for normal speed CW provided an
appropriate bandwidth is selected.Anyone know more about this program? 73,
Dick, PA0SE
Dick,
if you go to http://www.weaksignals.com
you can find, besides Argo, also Spectran,
which does what you ask for. It
has a FIR bandpass filter with selectable edges, and
an IIR peaking filter, whose center
frequency is adjustable. It has also an LMS denoiser
function, quite effective with CW,
a bit less with SSB.
Any usage report is welcome.
73 Alberto I2PHD
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