[Lf] Computer as DSP audio filter]

[Andre Kesteloot]

Alberto di Bene wrote:

> 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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