[arm-allstar] order of processing

[Doug Crompton]

Patrick,

   Try turning off the PL filter and turning on the DCS filter - item Q.
It is a much better brick wall filter. The reason it is sounding different
is that the PL filter does knock off some of the low end. The DCS filter
will also but the cutoff is different.

I do this on all myradio nodes and any nodes I setup for others. I suspect
we really should make the DCS filter the default.


*73 Doug*

*WA3DSP*

*http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*

On Mon, Jan 20, 2020 at 10:26 PM "Patrick Perdue via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Hi:
>
> I tried something yesterday that was a partial success.
>
> Someone mentioned that the audio from my Wouxun HT was a little lacking
> in bottom end, even more than those usually are.
>
> So, I logged into the node, took the PL filter away, and notched out the
> frequency of the PL tone specifically. My TX audio sounded lots
> better... but now the DTMF's just pass right through. I assume because
> the rxnotch happens after the process that detects DTMF, which is
> probably still hearing my PL tone and not detecting those frequencies.
>
> Obviously, I went back to the standard configuration with no rxnotch and
> PL filter enabled, but it really did sound quite a lot better the other
> way, even to other HT's.
>
> Just wondering what the order of DSP processing looks like for app.rpt.
>
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