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Alberto di Bene wrote:
<blockquote TYPE=CITE>Dick Rollema wrote:
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<b>Dear OM,</b> <b>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?</b> <b>73, Dick,
PA0SE</b></blockquote>
<p><br><font face="Verdana"><font size=-1>Dick,</font></font>
<br><font face="Verdana"><font size=-1> if you go to <a href="http://www.weaksignals.com">http://www.weaksignals.com</a>
you can find, besides Argo, also Spectran,</font></font>
<br><font face="Verdana"><font size=-1>which does what you ask for. It
has a FIR bandpass filter with selectable edges, and</font></font>
<br><font face="Verdana"><font size=-1>an IIR peaking filter, whose center
frequency is adjustable. It has also an LMS denoiser</font></font>
<br><font face="Verdana"><font size=-1>function, quite effective with CW,
a bit less with SSB.</font></font>
<p><font face="Verdana"><font size=-1>Any usage report is welcome.</font></font>
<p><font face="Verdana"><font size=-1>73 Alberto I2PHD</font></font>
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